Home / 2,239.11-3,089.95-1,281.89

Finding the Fourth Proportional to 2,239.11, 3,089.95 and 1,281.89

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Solution

The fourth proportional to 2,239.11, 3,089.95 and 1,281.89 is: 1,769.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.11 : 3,089.95 = 1,281.89 : x
  2. Step 2: Convert to fraction form
    2,239.11/3,089.95 = 1,281.89/x
  3. Step 3: Cross multiply
    2,239.11x = 3,089.95 × 1,281.89
  4. Step 4: Simplify right side
    2,239.11x = 3,960,980.53
  5. Step 5: Solve for x
    x = 3,960,980.53/2,239.11
  6. Step 6: Final answer
    x = 1,769.00

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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.