Home / 7,872.34-10,862.40-4,728.58

Finding the Fourth Proportional to 7,872.34, 10,862.40 and 4,728.58

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Solution

The fourth proportional to 7,872.34, 10,862.40 and 4,728.58 is: 6,524.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.34 : 10,862.40 = 4,728.58 : x
  2. Step 2: Convert to fraction form
    7,872.34/10,862.40 = 4,728.58/x
  3. Step 3: Cross multiply
    7,872.34x = 10,862.40 × 4,728.58
  4. Step 4: Simplify right side
    7,872.34x = 51,363,727.39
  5. Step 5: Solve for x
    x = 51,363,727.39/7,872.34
  6. Step 6: Final answer
    x = 6,524.58

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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.