Home / 1,560.67-2,151.44-1,117.80

Finding the Fourth Proportional to 1,560.67, 2,151.44 and 1,117.80

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Solution

The fourth proportional to 1,560.67, 2,151.44 and 1,117.80 is: 1,540.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.67 : 2,151.44 = 1,117.80 : x
  2. Step 2: Convert to fraction form
    1,560.67/2,151.44 = 1,117.80/x
  3. Step 3: Cross multiply
    1,560.67x = 2,151.44 × 1,117.80
  4. Step 4: Simplify right side
    1,560.67x = 2,404,879.63
  5. Step 5: Solve for x
    x = 2,404,879.63/1,560.67
  6. Step 6: Final answer
    x = 1,540.93

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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.