Home / 1,421.60-2,132.28-556.16

Finding the Fourth Proportional to 1,421.60, 2,132.28 and 556.16

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Solution

The fourth proportional to 1,421.60, 2,132.28 and 556.16 is: 834.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.60 : 2,132.28 = 556.16 : x
  2. Step 2: Convert to fraction form
    1,421.60/2,132.28 = 556.16/x
  3. Step 3: Cross multiply
    1,421.60x = 2,132.28 × 556.16
  4. Step 4: Simplify right side
    1,421.60x = 1,185,888.84
  5. Step 5: Solve for x
    x = 1,185,888.84/1,421.60
  6. Step 6: Final answer
    x = 834.19

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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.