Home / 1,578.04-2,177.36-914.85

Finding the Fourth Proportional to 1,578.04, 2,177.36 and 914.85

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Solution

The fourth proportional to 1,578.04, 2,177.36 and 914.85 is: 1,262.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.04 : 2,177.36 = 914.85 : x
  2. Step 2: Convert to fraction form
    1,578.04/2,177.36 = 914.85/x
  3. Step 3: Cross multiply
    1,578.04x = 2,177.36 × 914.85
  4. Step 4: Simplify right side
    1,578.04x = 1,991,957.80
  5. Step 5: Solve for x
    x = 1,991,957.80/1,578.04
  6. Step 6: Final answer
    x = 1,262.30

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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.