Home / 7,479.60-10,321.92-4,122.53

Finding the Fourth Proportional to 7,479.60, 10,321.92 and 4,122.53

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Solution

The fourth proportional to 7,479.60, 10,321.92 and 4,122.53 is: 5,689.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.60 : 10,321.92 = 4,122.53 : x
  2. Step 2: Convert to fraction form
    7,479.60/10,321.92 = 4,122.53/x
  3. Step 3: Cross multiply
    7,479.60x = 10,321.92 × 4,122.53
  4. Step 4: Simplify right side
    7,479.60x = 42,552,440.36
  5. Step 5: Solve for x
    x = 42,552,440.36/7,479.60
  6. Step 6: Final answer
    x = 5,689.13

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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.