Home / 3,139.86-4,333.74-1,881.66

Finding the Fourth Proportional to 3,139.86, 4,333.74 and 1,881.66

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Solution

The fourth proportional to 3,139.86, 4,333.74 and 1,881.66 is: 2,597.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.86 : 4,333.74 = 1,881.66 : x
  2. Step 2: Convert to fraction form
    3,139.86/4,333.74 = 1,881.66/x
  3. Step 3: Cross multiply
    3,139.86x = 4,333.74 × 1,881.66
  4. Step 4: Simplify right side
    3,139.86x = 8,154,625.21
  5. Step 5: Solve for x
    x = 8,154,625.21/3,139.86
  6. Step 6: Final answer
    x = 2,597.13

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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.