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Finding the Fourth Proportional to 2,508.60, 3,763.08 and 777.16

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Solution

The fourth proportional to 2,508.60, 3,763.08 and 777.16 is: 1,165.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,508.60 : 3,763.08 = 777.16 : x
  2. Step 2: Convert to fraction form
    2,508.60/3,763.08 = 777.16/x
  3. Step 3: Cross multiply
    2,508.60x = 3,763.08 × 777.16
  4. Step 4: Simplify right side
    2,508.60x = 2,924,515.25
  5. Step 5: Solve for x
    x = 2,924,515.25/2,508.60
  6. Step 6: Final answer
    x = 1,165.80

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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.