Home / 1,342.91-1,860.68-1,313.75

Finding the Fourth Proportional to 1,342.91, 1,860.68 and 1,313.75

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Solution

The fourth proportional to 1,342.91, 1,860.68 and 1,313.75 is: 1,820.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.91 : 1,860.68 = 1,313.75 : x
  2. Step 2: Convert to fraction form
    1,342.91/1,860.68 = 1,313.75/x
  3. Step 3: Cross multiply
    1,342.91x = 1,860.68 × 1,313.75
  4. Step 4: Simplify right side
    1,342.91x = 2,444,461.78
  5. Step 5: Solve for x
    x = 2,444,461.78/1,342.91
  6. Step 6: Final answer
    x = 1,820.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.