Home / 9,120.38-12,586.12-4,928.63

Finding the Fourth Proportional to 9,120.38, 12,586.12 and 4,928.63

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Solution

The fourth proportional to 9,120.38, 12,586.12 and 4,928.63 is: 6,801.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.38 : 12,586.12 = 4,928.63 : x
  2. Step 2: Convert to fraction form
    9,120.38/12,586.12 = 4,928.63/x
  3. Step 3: Cross multiply
    9,120.38x = 12,586.12 × 4,928.63
  4. Step 4: Simplify right side
    9,120.38x = 62,032,253.36
  5. Step 5: Solve for x
    x = 62,032,253.36/9,120.38
  6. Step 6: Final answer
    x = 6,801.50

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Half scale
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Double scale
Find fourth proportional to 9,121.38, 12,587.50 and 4,929.63
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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.