Home / 7,480.15-10,322.14-4,122.78

Finding the Fourth Proportional to 7,480.15, 10,322.14 and 4,122.78

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Solution

The fourth proportional to 7,480.15, 10,322.14 and 4,122.78 is: 5,689.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,480.15 : 10,322.14 = 4,122.78 : x
  2. Step 2: Convert to fraction form
    7,480.15/10,322.14 = 4,122.78/x
  3. Step 3: Cross multiply
    7,480.15x = 10,322.14 × 4,122.78
  4. Step 4: Simplify right side
    7,480.15x = 42,555,909.77
  5. Step 5: Solve for x
    x = 42,555,909.77/7,480.15
  6. Step 6: Final answer
    x = 5,689.18

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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.