Home / 4,772.18-7,123.40-4,420.43

Finding the Fourth Proportional to 4,772.18, 7,123.40 and 4,420.43

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Solution

The fourth proportional to 4,772.18, 7,123.40 and 4,420.43 is: 6,598.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,772.18 : 7,123.40 = 4,420.43 : x
  2. Step 2: Convert to fraction form
    4,772.18/7,123.40 = 4,420.43/x
  3. Step 3: Cross multiply
    4,772.18x = 7,123.40 × 4,420.43
  4. Step 4: Simplify right side
    4,772.18x = 31,488,519.92
  5. Step 5: Solve for x
    x = 31,488,519.92/4,772.18
  6. Step 6: Final answer
    x = 6,598.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.