Home / 7,155.20-9,872.32-4,502.40

Finding the Fourth Proportional to 7,155.20, 9,872.32 and 4,502.40

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Solution

The fourth proportional to 7,155.20, 9,872.32 and 4,502.40 is: 6,212.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.20 : 9,872.32 = 4,502.40 : x
  2. Step 2: Convert to fraction form
    7,155.20/9,872.32 = 4,502.40/x
  3. Step 3: Cross multiply
    7,155.20x = 9,872.32 × 4,502.40
  4. Step 4: Simplify right side
    7,155.20x = 44,449,133.57
  5. Step 5: Solve for x
    x = 44,449,133.57/7,155.20
  6. Step 6: Final answer
    x = 6,212.14

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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.