Home / 7,428.12-10,251.42-4,242.40

Finding the Fourth Proportional to 7,428.12, 10,251.42 and 4,242.40

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Solution

The fourth proportional to 7,428.12, 10,251.42 and 4,242.40 is: 5,854.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.12 : 10,251.42 = 4,242.40 : x
  2. Step 2: Convert to fraction form
    7,428.12/10,251.42 = 4,242.40/x
  3. Step 3: Cross multiply
    7,428.12x = 10,251.42 × 4,242.40
  4. Step 4: Simplify right side
    7,428.12x = 43,490,624.21
  5. Step 5: Solve for x
    x = 43,490,624.21/7,428.12
  6. Step 6: Final answer
    x = 5,854.86

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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.