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Finding the Fourth Proportional to 5,702.40, 7,865.10 and 3,604.50

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Solution

The fourth proportional to 5,702.40, 7,865.10 and 3,604.50 is: 4,971.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,702.40 : 7,865.10 = 3,604.50 : x
  2. Step 2: Convert to fraction form
    5,702.40/7,865.10 = 3,604.50/x
  3. Step 3: Cross multiply
    5,702.40x = 7,865.10 × 3,604.50
  4. Step 4: Simplify right side
    5,702.40x = 28,349,752.95
  5. Step 5: Solve for x
    x = 28,349,752.95/5,702.40
  6. Step 6: Final answer
    x = 4,971.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.