Home / 5,718.60-8,569.80-3,985.20

Finding the Fourth Proportional to 5,718.60, 8,569.80 and 3,985.20

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Solution

The fourth proportional to 5,718.60, 8,569.80 and 3,985.20 is: 5,972.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.60 : 8,569.80 = 3,985.20 : x
  2. Step 2: Convert to fraction form
    5,718.60/8,569.80 = 3,985.20/x
  3. Step 3: Cross multiply
    5,718.60x = 8,569.80 × 3,985.20
  4. Step 4: Simplify right side
    5,718.60x = 34,152,366.96
  5. Step 5: Solve for x
    x = 34,152,366.96/5,718.60
  6. Step 6: Final answer
    x = 5,972.16

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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.