Home / 1,421.67-1,962.19-924.74

Finding the Fourth Proportional to 1,421.67, 1,962.19 and 924.74

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Solution

The fourth proportional to 1,421.67, 1,962.19 and 924.74 is: 1,276.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.67 : 1,962.19 = 924.74 : x
  2. Step 2: Convert to fraction form
    1,421.67/1,962.19 = 924.74/x
  3. Step 3: Cross multiply
    1,421.67x = 1,962.19 × 924.74
  4. Step 4: Simplify right side
    1,421.67x = 1,814,515.58
  5. Step 5: Solve for x
    x = 1,814,515.58/1,421.67
  6. Step 6: Final answer
    x = 1,276.33

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1.5x scale

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.