Home / 9,122.52-12,570.48-6,290.76

Finding the Fourth Proportional to 9,122.52, 12,570.48 and 6,290.76

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Solution

The fourth proportional to 9,122.52, 12,570.48 and 6,290.76 is: 8,668.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.52 : 12,570.48 = 6,290.76 : x
  2. Step 2: Convert to fraction form
    9,122.52/12,570.48 = 6,290.76/x
  3. Step 3: Cross multiply
    9,122.52x = 12,570.48 × 6,290.76
  4. Step 4: Simplify right side
    9,122.52x = 79,077,872.76
  5. Step 5: Solve for x
    x = 79,077,872.76/9,122.52
  6. Step 6: Final answer
    x = 8,668.42

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.