Home / 3,913.80-5,871.27-1,140.12

Finding the Fourth Proportional to 3,913.80, 5,871.27 and 1,140.12

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Solution

The fourth proportional to 3,913.80, 5,871.27 and 1,140.12 is: 1,710.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.80 : 5,871.27 = 1,140.12 : x
  2. Step 2: Convert to fraction form
    3,913.80/5,871.27 = 1,140.12/x
  3. Step 3: Cross multiply
    3,913.80x = 5,871.27 × 1,140.12
  4. Step 4: Simplify right side
    3,913.80x = 6,693,952.35
  5. Step 5: Solve for x
    x = 6,693,952.35/3,913.80
  6. Step 6: Final answer
    x = 1,710.35

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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.