Home / 1,417.15-2,126.25-443.32

Finding the Fourth Proportional to 1,417.15, 2,126.25 and 443.32

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Solution

The fourth proportional to 1,417.15, 2,126.25 and 443.32 is: 665.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.15 : 2,126.25 = 443.32 : x
  2. Step 2: Convert to fraction form
    1,417.15/2,126.25 = 443.32/x
  3. Step 3: Cross multiply
    1,417.15x = 2,126.25 × 443.32
  4. Step 4: Simplify right side
    1,417.15x = 942,615.79
  5. Step 5: Solve for x
    x = 942,615.79/1,417.15
  6. Step 6: Final answer
    x = 665.15

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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.