Home / 5,124.40-7,686.24-1,615.12

Finding the Fourth Proportional to 5,124.40, 7,686.24 and 1,615.12

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Solution

The fourth proportional to 5,124.40, 7,686.24 and 1,615.12 is: 2,422.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,124.40 : 7,686.24 = 1,615.12 : x
  2. Step 2: Convert to fraction form
    5,124.40/7,686.24 = 1,615.12/x
  3. Step 3: Cross multiply
    5,124.40x = 7,686.24 × 1,615.12
  4. Step 4: Simplify right side
    5,124.40x = 12,414,199.95
  5. Step 5: Solve for x
    x = 12,414,199.95/5,124.40
  6. Step 6: Final answer
    x = 2,422.57

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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.