Home / 6,253.78-8,630.40-3,421.30

Finding the Fourth Proportional to 6,253.78, 8,630.40 and 3,421.30

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Solution

The fourth proportional to 6,253.78, 8,630.40 and 3,421.30 is: 4,721.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,253.78 : 8,630.40 = 3,421.30 : x
  2. Step 2: Convert to fraction form
    6,253.78/8,630.40 = 3,421.30/x
  3. Step 3: Cross multiply
    6,253.78x = 8,630.40 × 3,421.30
  4. Step 4: Simplify right side
    6,253.78x = 29,527,187.52
  5. Step 5: Solve for x
    x = 29,527,187.52/6,253.78
  6. Step 6: Final answer
    x = 4,721.49

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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.