Home / 1,492.22-2,240.87-918.74

Finding the Fourth Proportional to 1,492.22, 2,240.87 and 918.74

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Solution

The fourth proportional to 1,492.22, 2,240.87 and 918.74 is: 1,379.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.22 : 2,240.87 = 918.74 : x
  2. Step 2: Convert to fraction form
    1,492.22/2,240.87 = 918.74/x
  3. Step 3: Cross multiply
    1,492.22x = 2,240.87 × 918.74
  4. Step 4: Simplify right side
    1,492.22x = 2,058,777.91
  5. Step 5: Solve for x
    x = 2,058,777.91/1,492.22
  6. Step 6: Final answer
    x = 1,379.67

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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.