Home / 3,888.42-5,831.77-1,115.08

Finding the Fourth Proportional to 3,888.42, 5,831.77 and 1,115.08

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Solution

The fourth proportional to 3,888.42, 5,831.77 and 1,115.08 is: 1,672.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.42 : 5,831.77 = 1,115.08 : x
  2. Step 2: Convert to fraction form
    3,888.42/5,831.77 = 1,115.08/x
  3. Step 3: Cross multiply
    3,888.42x = 5,831.77 × 1,115.08
  4. Step 4: Simplify right side
    3,888.42x = 6,502,904.67
  5. Step 5: Solve for x
    x = 6,502,904.67/3,888.42
  6. Step 6: Final answer
    x = 1,672.38

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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.