Home / 7,871.32-10,861.03-4,727.57

Finding the Fourth Proportional to 7,871.32, 10,861.03 and 4,727.57

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Solution

The fourth proportional to 7,871.32, 10,861.03 and 4,727.57 is: 6,523.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,871.32 : 10,861.03 = 4,727.57 : x
  2. Step 2: Convert to fraction form
    7,871.32/10,861.03 = 4,727.57/x
  3. Step 3: Cross multiply
    7,871.32x = 10,861.03 × 4,727.57
  4. Step 4: Simplify right side
    7,871.32x = 51,346,279.60
  5. Step 5: Solve for x
    x = 51,346,279.60/7,871.32
  6. Step 6: Final answer
    x = 6,523.21

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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.