Home / 7,689.89-10,612.09-4,332.76

Finding the Fourth Proportional to 7,689.89, 10,612.09 and 4,332.76

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Solution

The fourth proportional to 7,689.89, 10,612.09 and 4,332.76 is: 5,979.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689.89 : 10,612.09 = 4,332.76 : x
  2. Step 2: Convert to fraction form
    7,689.89/10,612.09 = 4,332.76/x
  3. Step 3: Cross multiply
    7,689.89x = 10,612.09 × 4,332.76
  4. Step 4: Simplify right side
    7,689.89x = 45,979,601.71
  5. Step 5: Solve for x
    x = 45,979,601.71/7,689.89
  6. Step 6: Final answer
    x = 5,979.23

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Half scale
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Double scale
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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.