Home / 5,117.72-7,062.98-3,129.60

Finding the Fourth Proportional to 5,117.72, 7,062.98 and 3,129.60

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Solution

The fourth proportional to 5,117.72, 7,062.98 and 3,129.60 is: 4,319.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.72 : 7,062.98 = 3,129.60 : x
  2. Step 2: Convert to fraction form
    5,117.72/7,062.98 = 3,129.60/x
  3. Step 3: Cross multiply
    5,117.72x = 7,062.98 × 3,129.60
  4. Step 4: Simplify right side
    5,117.72x = 22,104,302.21
  5. Step 5: Solve for x
    x = 22,104,302.21/5,117.72
  6. Step 6: Final answer
    x = 4,319.17

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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.