Home / 3,547.29-5,316.75-2,087.40

Finding the Fourth Proportional to 3,547.29, 5,316.75 and 2,087.40

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Solution

The fourth proportional to 3,547.29, 5,316.75 and 2,087.40 is: 3,128.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,547.29 : 5,316.75 = 2,087.40 : x
  2. Step 2: Convert to fraction form
    3,547.29/5,316.75 = 2,087.40/x
  3. Step 3: Cross multiply
    3,547.29x = 5,316.75 × 2,087.40
  4. Step 4: Simplify right side
    3,547.29x = 11,098,183.95
  5. Step 5: Solve for x
    x = 11,098,183.95/3,547.29
  6. Step 6: Final answer
    x = 3,128.64

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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.