Home / 1,491.48-2,227.18-1,218.11

Finding the Fourth Proportional to 1,491.48, 2,227.18 and 1,218.11

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Solution

The fourth proportional to 1,491.48, 2,227.18 and 1,218.11 is: 1,818.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.48 : 2,227.18 = 1,218.11 : x
  2. Step 2: Convert to fraction form
    1,491.48/2,227.18 = 1,218.11/x
  3. Step 3: Cross multiply
    1,491.48x = 2,227.18 × 1,218.11
  4. Step 4: Simplify right side
    1,491.48x = 2,712,950.23
  5. Step 5: Solve for x
    x = 2,712,950.23/1,491.48
  6. Step 6: Final answer
    x = 1,818.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.