Home / 1,421.02-2,132.13-555.13

Finding the Fourth Proportional to 1,421.02, 2,132.13 and 555.13

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Solution

The fourth proportional to 1,421.02, 2,132.13 and 555.13 is: 832.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.02 : 2,132.13 = 555.13 : x
  2. Step 2: Convert to fraction form
    1,421.02/2,132.13 = 555.13/x
  3. Step 3: Cross multiply
    1,421.02x = 2,132.13 × 555.13
  4. Step 4: Simplify right side
    1,421.02x = 1,183,609.33
  5. Step 5: Solve for x
    x = 1,183,609.33/1,421.02
  6. Step 6: Final answer
    x = 832.93

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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.