Home / 7,170.49-9,885.90-5,181.52

Finding the Fourth Proportional to 7,170.49, 9,885.90 and 5,181.52

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Solution

The fourth proportional to 7,170.49, 9,885.90 and 5,181.52 is: 7,143.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.49 : 9,885.90 = 5,181.52 : x
  2. Step 2: Convert to fraction form
    7,170.49/9,885.90 = 5,181.52/x
  3. Step 3: Cross multiply
    7,170.49x = 9,885.90 × 5,181.52
  4. Step 4: Simplify right side
    7,170.49x = 51,223,988.57
  5. Step 5: Solve for x
    x = 51,223,988.57/7,170.49
  6. Step 6: Final answer
    x = 7,143.72

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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.