Home / 7,872.40-10,863.84-4,335.53

Finding the Fourth Proportional to 7,872.40, 10,863.84 and 4,335.53

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Solution

The fourth proportional to 7,872.40, 10,863.84 and 4,335.53 is: 5,983.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.40 : 10,863.84 = 4,335.53 : x
  2. Step 2: Convert to fraction form
    7,872.40/10,863.84 = 4,335.53/x
  3. Step 3: Cross multiply
    7,872.40x = 10,863.84 × 4,335.53
  4. Step 4: Simplify right side
    7,872.40x = 47,100,531.39
  5. Step 5: Solve for x
    x = 47,100,531.39/7,872.40
  6. Step 6: Final answer
    x = 5,983.00

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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.