Home / 3,547.28-5,321.36-1,207.68

Finding the Fourth Proportional to 3,547.28, 5,321.36 and 1,207.68

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Solution

The fourth proportional to 3,547.28, 5,321.36 and 1,207.68 is: 1,811.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,547.28 : 5,321.36 = 1,207.68 : x
  2. Step 2: Convert to fraction form
    3,547.28/5,321.36 = 1,207.68/x
  3. Step 3: Cross multiply
    3,547.28x = 5,321.36 × 1,207.68
  4. Step 4: Simplify right side
    3,547.28x = 6,426,500.04
  5. Step 5: Solve for x
    x = 6,426,500.04/3,547.28
  6. Step 6: Final answer
    x = 1,811.67

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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.