Home / 9,375.51-12,938.20-5,397.40

Finding the Fourth Proportional to 9,375.51, 12,938.20 and 5,397.40

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Solution

The fourth proportional to 9,375.51, 12,938.20 and 5,397.40 is: 7,448.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,375.51 : 12,938.20 = 5,397.40 : x
  2. Step 2: Convert to fraction form
    9,375.51/12,938.20 = 5,397.40/x
  3. Step 3: Cross multiply
    9,375.51x = 12,938.20 × 5,397.40
  4. Step 4: Simplify right side
    9,375.51x = 69,832,640.68
  5. Step 5: Solve for x
    x = 69,832,640.68/9,375.51
  6. Step 6: Final answer
    x = 7,448.41

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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.