Home / 2,772.48-4,158.75-1,128.66

Finding the Fourth Proportional to 2,772.48, 4,158.75 and 1,128.66

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Solution

The fourth proportional to 2,772.48, 4,158.75 and 1,128.66 is: 1,693.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.48 : 4,158.75 = 1,128.66 : x
  2. Step 2: Convert to fraction form
    2,772.48/4,158.75 = 1,128.66/x
  3. Step 3: Cross multiply
    2,772.48x = 4,158.75 × 1,128.66
  4. Step 4: Simplify right side
    2,772.48x = 4,693,814.78
  5. Step 5: Solve for x
    x = 4,693,814.78/2,772.48
  6. Step 6: Final answer
    x = 1,693.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.