Home / 9,311.28-12,849.40-5,119.24

Finding the Fourth Proportional to 9,311.28, 12,849.40 and 5,119.24

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Solution

The fourth proportional to 9,311.28, 12,849.40 and 5,119.24 is: 7,064.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,311.28 : 12,849.40 = 5,119.24 : x
  2. Step 2: Convert to fraction form
    9,311.28/12,849.40 = 5,119.24/x
  3. Step 3: Cross multiply
    9,311.28x = 12,849.40 × 5,119.24
  4. Step 4: Simplify right side
    9,311.28x = 65,779,162.46
  5. Step 5: Solve for x
    x = 65,779,162.46/9,311.28
  6. Step 6: Final answer
    x = 7,064.46

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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.