Home / 1,579.52-2,180.15-916.29

Finding the Fourth Proportional to 1,579.52, 2,180.15 and 916.29

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Solution

The fourth proportional to 1,579.52, 2,180.15 and 916.29 is: 1,264.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.52 : 2,180.15 = 916.29 : x
  2. Step 2: Convert to fraction form
    1,579.52/2,180.15 = 916.29/x
  3. Step 3: Cross multiply
    1,579.52x = 2,180.15 × 916.29
  4. Step 4: Simplify right side
    1,579.52x = 1,997,649.64
  5. Step 5: Solve for x
    x = 1,997,649.64/1,579.52
  6. Step 6: Final answer
    x = 1,264.72

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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.