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Finding the Fourth Proportional to 5,612.90, 8,417.80 and 2,325.20

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Solution

The fourth proportional to 5,612.90, 8,417.80 and 2,325.20 is: 3,487.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,612.90 : 8,417.80 = 2,325.20 : x
  2. Step 2: Convert to fraction form
    5,612.90/8,417.80 = 2,325.20/x
  3. Step 3: Cross multiply
    5,612.90x = 8,417.80 × 2,325.20
  4. Step 4: Simplify right side
    5,612.90x = 19,573,068.56
  5. Step 5: Solve for x
    x = 19,573,068.56/5,612.90
  6. Step 6: Final answer
    x = 3,487.16

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.