Home / 5,439.03-8,140.55-4,678.71

Finding the Fourth Proportional to 5,439.03, 8,140.55 and 4,678.71

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Solution

The fourth proportional to 5,439.03, 8,140.55 and 4,678.71 is: 7,002.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.03 : 8,140.55 = 4,678.71 : x
  2. Step 2: Convert to fraction form
    5,439.03/8,140.55 = 4,678.71/x
  3. Step 3: Cross multiply
    5,439.03x = 8,140.55 × 4,678.71
  4. Step 4: Simplify right side
    5,439.03x = 38,087,249.30
  5. Step 5: Solve for x
    x = 38,087,249.30/5,439.03
  6. Step 6: Final answer
    x = 7,002.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.