Home / 5,153.34-7,117.40-3,988.56

Finding the Fourth Proportional to 5,153.34, 7,117.40 and 3,988.56

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Solution

The fourth proportional to 5,153.34, 7,117.40 and 3,988.56 is: 5,508.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,153.34 : 7,117.40 = 3,988.56 : x
  2. Step 2: Convert to fraction form
    5,153.34/7,117.40 = 3,988.56/x
  3. Step 3: Cross multiply
    5,153.34x = 7,117.40 × 3,988.56
  4. Step 4: Simplify right side
    5,153.34x = 28,388,176.94
  5. Step 5: Solve for x
    x = 28,388,176.94/5,153.34
  6. Step 6: Final answer
    x = 5,508.69

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Half scale
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Double scale
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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.