Home / 7,764.68-10,715.28-4,620.80

Finding the Fourth Proportional to 7,764.68, 10,715.28 and 4,620.80

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Solution

The fourth proportional to 7,764.68, 10,715.28 and 4,620.80 is: 6,376.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.68 : 10,715.28 = 4,620.80 : x
  2. Step 2: Convert to fraction form
    7,764.68/10,715.28 = 4,620.80/x
  3. Step 3: Cross multiply
    7,764.68x = 10,715.28 × 4,620.80
  4. Step 4: Simplify right side
    7,764.68x = 49,513,165.82
  5. Step 5: Solve for x
    x = 49,513,165.82/7,764.68
  6. Step 6: Final answer
    x = 6,376.72

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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.