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Finding the Fourth Proportional to 5,711.80, 7,903.83 and 4,871.16

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Solution

The fourth proportional to 5,711.80, 7,903.83 and 4,871.16 is: 6,740.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,711.80 : 7,903.83 = 4,871.16 : x
  2. Step 2: Convert to fraction form
    5,711.80/7,903.83 = 4,871.16/x
  3. Step 3: Cross multiply
    5,711.80x = 7,903.83 × 4,871.16
  4. Step 4: Simplify right side
    5,711.80x = 38,500,820.54
  5. Step 5: Solve for x
    x = 38,500,820.54/5,711.80
  6. Step 6: Final answer
    x = 6,740.58

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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.