Home / 1,881.85-2,596.09-1,218.92

Finding the Fourth Proportional to 1,881.85, 2,596.09 and 1,218.92

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Solution

The fourth proportional to 1,881.85, 2,596.09 and 1,218.92 is: 1,681.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,881.85 : 2,596.09 = 1,218.92 : x
  2. Step 2: Convert to fraction form
    1,881.85/2,596.09 = 1,218.92/x
  3. Step 3: Cross multiply
    1,881.85x = 2,596.09 × 1,218.92
  4. Step 4: Simplify right side
    1,881.85x = 3,164,424.30
  5. Step 5: Solve for x
    x = 3,164,424.30/1,881.85
  6. Step 6: Final answer
    x = 1,681.55

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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.