Home / 1,081.85-1,492.95-609.75

Finding the Fourth Proportional to 1,081.85, 1,492.95 and 609.75

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Solution

The fourth proportional to 1,081.85, 1,492.95 and 609.75 is: 841.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.85 : 1,492.95 = 609.75 : x
  2. Step 2: Convert to fraction form
    1,081.85/1,492.95 = 609.75/x
  3. Step 3: Cross multiply
    1,081.85x = 1,492.95 × 609.75
  4. Step 4: Simplify right side
    1,081.85x = 910,326.26
  5. Step 5: Solve for x
    x = 910,326.26/1,081.85
  6. Step 6: Final answer
    x = 841.45

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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.