Home / 3,001.31-4,143.80-1,955.15

Finding the Fourth Proportional to 3,001.31, 4,143.80 and 1,955.15

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Solution

The fourth proportional to 3,001.31, 4,143.80 and 1,955.15 is: 2,699.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,001.31 : 4,143.80 = 1,955.15 : x
  2. Step 2: Convert to fraction form
    3,001.31/4,143.80 = 1,955.15/x
  3. Step 3: Cross multiply
    3,001.31x = 4,143.80 × 1,955.15
  4. Step 4: Simplify right side
    3,001.31x = 8,101,740.79
  5. Step 5: Solve for x
    x = 8,101,740.79/3,001.31
  6. Step 6: Final answer
    x = 2,699.40

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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.