Home / 5,123.83-7,071.53-2,886.13

Finding the Fourth Proportional to 5,123.83, 7,071.53 and 2,886.13

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Solution

The fourth proportional to 5,123.83, 7,071.53 and 2,886.13 is: 3,983.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.83 : 7,071.53 = 2,886.13 : x
  2. Step 2: Convert to fraction form
    5,123.83/7,071.53 = 2,886.13/x
  3. Step 3: Cross multiply
    5,123.83x = 7,071.53 × 2,886.13
  4. Step 4: Simplify right side
    5,123.83x = 20,409,354.88
  5. Step 5: Solve for x
    x = 20,409,354.88/5,123.83
  6. Step 6: Final answer
    x = 3,983.22

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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.