Home / 1,415.04-2,121.36-549.96

Finding the Fourth Proportional to 1,415.04, 2,121.36 and 549.96

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Solution

The fourth proportional to 1,415.04, 2,121.36 and 549.96 is: 824.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.04 : 2,121.36 = 549.96 : x
  2. Step 2: Convert to fraction form
    1,415.04/2,121.36 = 549.96/x
  3. Step 3: Cross multiply
    1,415.04x = 2,121.36 × 549.96
  4. Step 4: Simplify right side
    1,415.04x = 1,166,663.15
  5. Step 5: Solve for x
    x = 1,166,663.15/1,415.04
  6. Step 6: Final answer
    x = 824.47

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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.