Home / 8,620.02-12,931.65-3,426.30

Finding the Fourth Proportional to 8,620.02, 12,931.65 and 3,426.30

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Solution

The fourth proportional to 8,620.02, 12,931.65 and 3,426.30 is: 5,140.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.02 : 12,931.65 = 3,426.30 : x
  2. Step 2: Convert to fraction form
    8,620.02/12,931.65 = 3,426.30/x
  3. Step 3: Cross multiply
    8,620.02x = 12,931.65 × 3,426.30
  4. Step 4: Simplify right side
    8,620.02x = 44,307,712.40
  5. Step 5: Solve for x
    x = 44,307,712.40/8,620.02
  6. Step 6: Final answer
    x = 5,140.09

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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.