Home / 1,560.36-2,147.40-1,181.28

Finding the Fourth Proportional to 1,560.36, 2,147.40 and 1,181.28

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Solution

The fourth proportional to 1,560.36, 2,147.40 and 1,181.28 is: 1,625.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.36 : 2,147.40 = 1,181.28 : x
  2. Step 2: Convert to fraction form
    1,560.36/2,147.40 = 1,181.28/x
  3. Step 3: Cross multiply
    1,560.36x = 2,147.40 × 1,181.28
  4. Step 4: Simplify right side
    1,560.36x = 2,536,680.67
  5. Step 5: Solve for x
    x = 2,536,680.67/1,560.36
  6. Step 6: Final answer
    x = 1,625.70

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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.