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Finding the Fourth Proportional to 2,520, 3,478.08 and 1,416

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Solution

The fourth proportional to 2,520, 3,478.08 and 1,416 is: 1,954.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520 : 3,478.08 = 1,416 : x
  2. Step 2: Convert to fraction form
    2,520/3,478.08 = 1,416/x
  3. Step 3: Cross multiply
    2,520x = 3,478.08 × 1,416
  4. Step 4: Simplify right side
    2,520x = 4,924,961.28
  5. Step 5: Solve for x
    x = 4,924,961.28/2,520
  6. Step 6: Final answer
    x = 1,954.35

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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.