Home / 5,130.09-7,109.27-5,031.66

Finding the Fourth Proportional to 5,130.09, 7,109.27 and 5,031.66

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Solution

The fourth proportional to 5,130.09, 7,109.27 and 5,031.66 is: 6,972.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.09 : 7,109.27 = 5,031.66 : x
  2. Step 2: Convert to fraction form
    5,130.09/7,109.27 = 5,031.66/x
  3. Step 3: Cross multiply
    5,130.09x = 7,109.27 × 5,031.66
  4. Step 4: Simplify right side
    5,130.09x = 35,771,404.33
  5. Step 5: Solve for x
    x = 35,771,404.33/5,130.09
  6. Step 6: Final answer
    x = 6,972.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.