Home / 5,123.66-7,070.58-2,885.76

Finding the Fourth Proportional to 5,123.66, 7,070.58 and 2,885.76

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Solution

The fourth proportional to 5,123.66, 7,070.58 and 2,885.76 is: 3,982.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.66 : 7,070.58 = 2,885.76 : x
  2. Step 2: Convert to fraction form
    5,123.66/7,070.58 = 2,885.76/x
  3. Step 3: Cross multiply
    5,123.66x = 7,070.58 × 2,885.76
  4. Step 4: Simplify right side
    5,123.66x = 20,403,996.94
  5. Step 5: Solve for x
    x = 20,403,996.94/5,123.66
  6. Step 6: Final answer
    x = 3,982.31

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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.