Home / 3,720.16-5,129.98-2,600.68

Finding the Fourth Proportional to 3,720.16, 5,129.98 and 2,600.68

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Solution

The fourth proportional to 3,720.16, 5,129.98 and 2,600.68 is: 3,586.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.16 : 5,129.98 = 2,600.68 : x
  2. Step 2: Convert to fraction form
    3,720.16/5,129.98 = 2,600.68/x
  3. Step 3: Cross multiply
    3,720.16x = 5,129.98 × 2,600.68
  4. Step 4: Simplify right side
    3,720.16x = 13,341,436.39
  5. Step 5: Solve for x
    x = 13,341,436.39/3,720.16
  6. Step 6: Final answer
    x = 3,586.25

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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.