Home / 1,881.47-2,597.19-1,218.89

Finding the Fourth Proportional to 1,881.47, 2,597.19 and 1,218.89

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Solution

The fourth proportional to 1,881.47, 2,597.19 and 1,218.89 is: 1,682.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,881.47 : 2,597.19 = 1,218.89 : x
  2. Step 2: Convert to fraction form
    1,881.47/2,597.19 = 1,218.89/x
  3. Step 3: Cross multiply
    1,881.47x = 2,597.19 × 1,218.89
  4. Step 4: Simplify right side
    1,881.47x = 3,165,688.92
  5. Step 5: Solve for x
    x = 3,165,688.92/1,881.47
  6. Step 6: Final answer
    x = 1,682.56

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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.