Home / 1,421.85-1,961.06-924.66

Finding the Fourth Proportional to 1,421.85, 1,961.06 and 924.66

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Solution

The fourth proportional to 1,421.85, 1,961.06 and 924.66 is: 1,275.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.85 : 1,961.06 = 924.66 : x
  2. Step 2: Convert to fraction form
    1,421.85/1,961.06 = 924.66/x
  3. Step 3: Cross multiply
    1,421.85x = 1,961.06 × 924.66
  4. Step 4: Simplify right side
    1,421.85x = 1,813,309.12
  5. Step 5: Solve for x
    x = 1,813,309.12/1,421.85
  6. Step 6: Final answer
    x = 1,275.32

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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.