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Finding the Fourth Proportional to 3,888.87, 5,831.55 and 1,114.91

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Solution

The fourth proportional to 3,888.87, 5,831.55 and 1,114.91 is: 1,671.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.87 : 5,831.55 = 1,114.91 : x
  2. Step 2: Convert to fraction form
    3,888.87/5,831.55 = 1,114.91/x
  3. Step 3: Cross multiply
    3,888.87x = 5,831.55 × 1,114.91
  4. Step 4: Simplify right side
    3,888.87x = 6,501,624.25
  5. Step 5: Solve for x
    x = 6,501,624.25/3,888.87
  6. Step 6: Final answer
    x = 1,671.85

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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.