Home / 5,123.61-7,070.01-2,885.75

Finding the Fourth Proportional to 5,123.61, 7,070.01 and 2,885.75

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Solution

The fourth proportional to 5,123.61, 7,070.01 and 2,885.75 is: 3,982.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.61 : 7,070.01 = 2,885.75 : x
  2. Step 2: Convert to fraction form
    5,123.61/7,070.01 = 2,885.75/x
  3. Step 3: Cross multiply
    5,123.61x = 7,070.01 × 2,885.75
  4. Step 4: Simplify right side
    5,123.61x = 20,402,246.01
  5. Step 5: Solve for x
    x = 20,402,246.01/5,123.61
  6. Step 6: Final answer
    x = 3,982.01

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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.