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Finding the Fourth Proportional to 4,862.78, 7,294.20 and 1,784.78

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Solution

The fourth proportional to 4,862.78, 7,294.20 and 1,784.78 is: 2,677.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,862.78 : 7,294.20 = 1,784.78 : x
  2. Step 2: Convert to fraction form
    4,862.78/7,294.20 = 1,784.78/x
  3. Step 3: Cross multiply
    4,862.78x = 7,294.20 × 1,784.78
  4. Step 4: Simplify right side
    4,862.78x = 13,018,542.28
  5. Step 5: Solve for x
    x = 13,018,542.28/4,862.78
  6. Step 6: Final answer
    x = 2,677.18

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1.5x scale

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.