Home / 9,612.45-13,265.16-5,420.70

Finding the Fourth Proportional to 9,612.45, 13,265.16 and 5,420.70

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Solution

The fourth proportional to 9,612.45, 13,265.16 and 5,420.70 is: 7,480.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,612.45 : 13,265.16 = 5,420.70 : x
  2. Step 2: Convert to fraction form
    9,612.45/13,265.16 = 5,420.70/x
  3. Step 3: Cross multiply
    9,612.45x = 13,265.16 × 5,420.70
  4. Step 4: Simplify right side
    9,612.45x = 71,906,452.81
  5. Step 5: Solve for x
    x = 71,906,452.81/9,612.45
  6. Step 6: Final answer
    x = 7,480.55

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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.