Home / 7,472.20-10,311.64-4,115.01

Finding the Fourth Proportional to 7,472.20, 10,311.64 and 4,115.01

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Solution

The fourth proportional to 7,472.20, 10,311.64 and 4,115.01 is: 5,678.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.20 : 10,311.64 = 4,115.01 : x
  2. Step 2: Convert to fraction form
    7,472.20/10,311.64 = 4,115.01/x
  3. Step 3: Cross multiply
    7,472.20x = 10,311.64 × 4,115.01
  4. Step 4: Simplify right side
    7,472.20x = 42,432,501.72
  5. Step 5: Solve for x
    x = 42,432,501.72/7,472.20
  6. Step 6: Final answer
    x = 5,678.72

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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.