Home / 9,640.40-13,302.60-5,449.04

Finding the Fourth Proportional to 9,640.40, 13,302.60 and 5,449.04

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Solution

The fourth proportional to 9,640.40, 13,302.60 and 5,449.04 is: 7,519.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,640.40 : 13,302.60 = 5,449.04 : x
  2. Step 2: Convert to fraction form
    9,640.40/13,302.60 = 5,449.04/x
  3. Step 3: Cross multiply
    9,640.40x = 13,302.60 × 5,449.04
  4. Step 4: Simplify right side
    9,640.40x = 72,486,399.50
  5. Step 5: Solve for x
    x = 72,486,399.50/9,640.40
  6. Step 6: Final answer
    x = 7,519.02

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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.