Home / 5,715.84-7,888.40-3,591.72

Finding the Fourth Proportional to 5,715.84, 7,888.40 and 3,591.72

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Solution

The fourth proportional to 5,715.84, 7,888.40 and 3,591.72 is: 4,956.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.84 : 7,888.40 = 3,591.72 : x
  2. Step 2: Convert to fraction form
    5,715.84/7,888.40 = 3,591.72/x
  3. Step 3: Cross multiply
    5,715.84x = 7,888.40 × 3,591.72
  4. Step 4: Simplify right side
    5,715.84x = 28,332,924.05
  5. Step 5: Solve for x
    x = 28,332,924.05/5,715.84
  6. Step 6: Final answer
    x = 4,956.91

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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.