Home / 3,847.34-5,307.45-2,354.78

Finding the Fourth Proportional to 3,847.34, 5,307.45 and 2,354.78

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Solution

The fourth proportional to 3,847.34, 5,307.45 and 2,354.78 is: 3,248.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.34 : 5,307.45 = 2,354.78 : x
  2. Step 2: Convert to fraction form
    3,847.34/5,307.45 = 2,354.78/x
  3. Step 3: Cross multiply
    3,847.34x = 5,307.45 × 2,354.78
  4. Step 4: Simplify right side
    3,847.34x = 12,497,877.11
  5. Step 5: Solve for x
    x = 12,497,877.11/3,847.34
  6. Step 6: Final answer
    x = 3,248.45

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1.5x scale

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.