Home / 1,145.80-1,719.48-1,077.52

Finding the Fourth Proportional to 1,145.80, 1,719.48 and 1,077.52

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Solution

The fourth proportional to 1,145.80, 1,719.48 and 1,077.52 is: 1,617.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145.80 : 1,719.48 = 1,077.52 : x
  2. Step 2: Convert to fraction form
    1,145.80/1,719.48 = 1,077.52/x
  3. Step 3: Cross multiply
    1,145.80x = 1,719.48 × 1,077.52
  4. Step 4: Simplify right side
    1,145.80x = 1,852,774.09
  5. Step 5: Solve for x
    x = 1,852,774.09/1,145.80
  6. Step 6: Final answer
    x = 1,617.01

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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.