Home / 8,620.24-12,901.20-5,335.60

Finding the Fourth Proportional to 8,620.24, 12,901.20 and 5,335.60

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Solution

The fourth proportional to 8,620.24, 12,901.20 and 5,335.60 is: 7,985.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.24 : 12,901.20 = 5,335.60 : x
  2. Step 2: Convert to fraction form
    8,620.24/12,901.20 = 5,335.60/x
  3. Step 3: Cross multiply
    8,620.24x = 12,901.20 × 5,335.60
  4. Step 4: Simplify right side
    8,620.24x = 68,835,642.72
  5. Step 5: Solve for x
    x = 68,835,642.72/8,620.24
  6. Step 6: Final answer
    x = 7,985.35

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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.