Home / 7,869.28-10,863.60-7,440.48

Finding the Fourth Proportional to 7,869.28, 10,863.60 and 7,440.48

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Solution

The fourth proportional to 7,869.28, 10,863.60 and 7,440.48 is: 10,271.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.28 : 10,863.60 = 7,440.48 : x
  2. Step 2: Convert to fraction form
    7,869.28/10,863.60 = 7,440.48/x
  3. Step 3: Cross multiply
    7,869.28x = 10,863.60 × 7,440.48
  4. Step 4: Simplify right side
    7,869.28x = 80,830,398.53
  5. Step 5: Solve for x
    x = 80,830,398.53/7,869.28
  6. Step 6: Final answer
    x = 10,271.64

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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.