Home / 1,579.15-2,179.23-880.53

Finding the Fourth Proportional to 1,579.15, 2,179.23 and 880.53

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Solution

The fourth proportional to 1,579.15, 2,179.23 and 880.53 is: 1,215.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.15 : 2,179.23 = 880.53 : x
  2. Step 2: Convert to fraction form
    1,579.15/2,179.23 = 880.53/x
  3. Step 3: Cross multiply
    1,579.15x = 2,179.23 × 880.53
  4. Step 4: Simplify right side
    1,579.15x = 1,918,877.39
  5. Step 5: Solve for x
    x = 1,918,877.39/1,579.15
  6. Step 6: Final answer
    x = 1,215.13

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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.