Home / 9,122.48-12,587.88-5,342.84

Finding the Fourth Proportional to 9,122.48, 12,587.88 and 5,342.84

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Solution

The fourth proportional to 9,122.48, 12,587.88 and 5,342.84 is: 7,372.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.48 : 12,587.88 = 5,342.84 : x
  2. Step 2: Convert to fraction form
    9,122.48/12,587.88 = 5,342.84/x
  3. Step 3: Cross multiply
    9,122.48x = 12,587.88 × 5,342.84
  4. Step 4: Simplify right side
    9,122.48x = 67,255,028.78
  5. Step 5: Solve for x
    x = 67,255,028.78/9,122.48
  6. Step 6: Final answer
    x = 7,372.45

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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.