Home / 5,005.38-7,507.86-1,257.15

Finding the Fourth Proportional to 5,005.38, 7,507.86 and 1,257.15

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Solution

The fourth proportional to 5,005.38, 7,507.86 and 1,257.15 is: 1,885.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,005.38 : 7,507.86 = 1,257.15 : x
  2. Step 2: Convert to fraction form
    5,005.38/7,507.86 = 1,257.15/x
  3. Step 3: Cross multiply
    5,005.38x = 7,507.86 × 1,257.15
  4. Step 4: Simplify right side
    5,005.38x = 9,438,506.20
  5. Step 5: Solve for x
    x = 9,438,506.20/5,005.38
  6. Step 6: Final answer
    x = 1,885.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.