Home / 7,155.28-9,874.24-4,011.40

Finding the Fourth Proportional to 7,155.28, 9,874.24 and 4,011.40

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Solution

The fourth proportional to 7,155.28, 9,874.24 and 4,011.40 is: 5,535.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.28 : 9,874.24 = 4,011.40 : x
  2. Step 2: Convert to fraction form
    7,155.28/9,874.24 = 4,011.40/x
  3. Step 3: Cross multiply
    7,155.28x = 9,874.24 × 4,011.40
  4. Step 4: Simplify right side
    7,155.28x = 39,609,526.34
  5. Step 5: Solve for x
    x = 39,609,526.34/7,155.28
  6. Step 6: Final answer
    x = 5,535.71

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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.