Home / 1,649.14-2,473.78-918.16

Finding the Fourth Proportional to 1,649.14, 2,473.78 and 918.16

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Solution

The fourth proportional to 1,649.14, 2,473.78 and 918.16 is: 1,377.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,649.14 : 2,473.78 = 918.16 : x
  2. Step 2: Convert to fraction form
    1,649.14/2,473.78 = 918.16/x
  3. Step 3: Cross multiply
    1,649.14x = 2,473.78 × 918.16
  4. Step 4: Simplify right side
    1,649.14x = 2,271,328.36
  5. Step 5: Solve for x
    x = 2,271,328.36/1,649.14
  6. Step 6: Final answer
    x = 1,377.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.