Home / 1,492.16-2,240.68-918.68

Finding the Fourth Proportional to 1,492.16, 2,240.68 and 918.68

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Solution

The fourth proportional to 1,492.16, 2,240.68 and 918.68 is: 1,379.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.16 : 2,240.68 = 918.68 : x
  2. Step 2: Convert to fraction form
    1,492.16/2,240.68 = 918.68/x
  3. Step 3: Cross multiply
    1,492.16x = 2,240.68 × 918.68
  4. Step 4: Simplify right side
    1,492.16x = 2,058,467.90
  5. Step 5: Solve for x
    x = 2,058,467.90/1,492.16
  6. Step 6: Final answer
    x = 1,379.52

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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.