Home / 7,521.42-10,380.15-4,377.78

Finding the Fourth Proportional to 7,521.42, 10,380.15 and 4,377.78

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Solution

The fourth proportional to 7,521.42, 10,380.15 and 4,377.78 is: 6,041.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,521.42 : 10,380.15 = 4,377.78 : x
  2. Step 2: Convert to fraction form
    7,521.42/10,380.15 = 4,377.78/x
  3. Step 3: Cross multiply
    7,521.42x = 10,380.15 × 4,377.78
  4. Step 4: Simplify right side
    7,521.42x = 45,442,013.07
  5. Step 5: Solve for x
    x = 45,442,013.07/7,521.42
  6. Step 6: Final answer
    x = 6,041.68

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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.