Home / 1,560.56-2,151.09-1,228.55

Finding the Fourth Proportional to 1,560.56, 2,151.09 and 1,228.55

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Solution

The fourth proportional to 1,560.56, 2,151.09 and 1,228.55 is: 1,693.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.56 : 2,151.09 = 1,228.55 : x
  2. Step 2: Convert to fraction form
    1,560.56/2,151.09 = 1,228.55/x
  3. Step 3: Cross multiply
    1,560.56x = 2,151.09 × 1,228.55
  4. Step 4: Simplify right side
    1,560.56x = 2,642,710.86
  5. Step 5: Solve for x
    x = 2,642,710.86/1,560.56
  6. Step 6: Final answer
    x = 1,693.44

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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.