Home / 1,649.18-2,276.17-1,231.63

Finding the Fourth Proportional to 1,649.18, 2,276.17 and 1,231.63

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Solution

The fourth proportional to 1,649.18, 2,276.17 and 1,231.63 is: 1,699.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,649.18 : 2,276.17 = 1,231.63 : x
  2. Step 2: Convert to fraction form
    1,649.18/2,276.17 = 1,231.63/x
  3. Step 3: Cross multiply
    1,649.18x = 2,276.17 × 1,231.63
  4. Step 4: Simplify right side
    1,649.18x = 2,803,390.49
  5. Step 5: Solve for x
    x = 2,803,390.49/1,649.18
  6. Step 6: Final answer
    x = 1,699.87

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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.