Home / 1,421.48-1,961.11-924.55

Finding the Fourth Proportional to 1,421.48, 1,961.11 and 924.55

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Solution

The fourth proportional to 1,421.48, 1,961.11 and 924.55 is: 1,275.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.48 : 1,961.11 = 924.55 : x
  2. Step 2: Convert to fraction form
    1,421.48/1,961.11 = 924.55/x
  3. Step 3: Cross multiply
    1,421.48x = 1,961.11 × 924.55
  4. Step 4: Simplify right side
    1,421.48x = 1,813,140.50
  5. Step 5: Solve for x
    x = 1,813,140.50/1,421.48
  6. Step 6: Final answer
    x = 1,275.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.