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Finding the Fourth Proportional to 5,570.47, 8,355.71 and 1,871.71

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Solution

The fourth proportional to 5,570.47, 8,355.71 and 1,871.71 is: 2,807.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,570.47 : 8,355.71 = 1,871.71 : x
  2. Step 2: Convert to fraction form
    5,570.47/8,355.71 = 1,871.71/x
  3. Step 3: Cross multiply
    5,570.47x = 8,355.71 × 1,871.71
  4. Step 4: Simplify right side
    5,570.47x = 15,639,439.23
  5. Step 5: Solve for x
    x = 15,639,439.23/5,570.47
  6. Step 6: Final answer
    x = 2,807.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.