Home / 1,319.51-1,977.43-1,145.76

Finding the Fourth Proportional to 1,319.51, 1,977.43 and 1,145.76

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Solution

The fourth proportional to 1,319.51, 1,977.43 and 1,145.76 is: 1,717.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.51 : 1,977.43 = 1,145.76 : x
  2. Step 2: Convert to fraction form
    1,319.51/1,977.43 = 1,145.76/x
  3. Step 3: Cross multiply
    1,319.51x = 1,977.43 × 1,145.76
  4. Step 4: Simplify right side
    1,319.51x = 2,265,660.20
  5. Step 5: Solve for x
    x = 2,265,660.20/1,319.51
  6. Step 6: Final answer
    x = 1,717.05

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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.