Home / 1,948.30-2,920.50-777.88

Finding the Fourth Proportional to 1,948.30, 2,920.50 and 777.88

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Solution

The fourth proportional to 1,948.30, 2,920.50 and 777.88 is: 1,166.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.30 : 2,920.50 = 777.88 : x
  2. Step 2: Convert to fraction form
    1,948.30/2,920.50 = 777.88/x
  3. Step 3: Cross multiply
    1,948.30x = 2,920.50 × 777.88
  4. Step 4: Simplify right side
    1,948.30x = 2,271,798.54
  5. Step 5: Solve for x
    x = 2,271,798.54/1,948.30
  6. Step 6: Final answer
    x = 1,166.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.