Home / 1,231.02-1,698.30-882.18

Finding the Fourth Proportional to 1,231.02, 1,698.30 and 882.18

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Solution

The fourth proportional to 1,231.02, 1,698.30 and 882.18 is: 1,217.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.02 : 1,698.30 = 882.18 : x
  2. Step 2: Convert to fraction form
    1,231.02/1,698.30 = 882.18/x
  3. Step 3: Cross multiply
    1,231.02x = 1,698.30 × 882.18
  4. Step 4: Simplify right side
    1,231.02x = 1,498,206.29
  5. Step 5: Solve for x
    x = 1,498,206.29/1,231.02
  6. Step 6: Final answer
    x = 1,217.04

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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.