Home / 8,935.28-12,329.84-5,158.16

Finding the Fourth Proportional to 8,935.28, 12,329.84 and 5,158.16

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Solution

The fourth proportional to 8,935.28, 12,329.84 and 5,158.16 is: 7,117.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,935.28 : 12,329.84 = 5,158.16 : x
  2. Step 2: Convert to fraction form
    8,935.28/12,329.84 = 5,158.16/x
  3. Step 3: Cross multiply
    8,935.28x = 12,329.84 × 5,158.16
  4. Step 4: Simplify right side
    8,935.28x = 63,599,287.49
  5. Step 5: Solve for x
    x = 63,599,287.49/8,935.28
  6. Step 6: Final answer
    x = 7,117.77

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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.