Home / 1,335.30-1,837.13-1,298.85

Finding the Fourth Proportional to 1,335.30, 1,837.13 and 1,298.85

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Solution

The fourth proportional to 1,335.30, 1,837.13 and 1,298.85 is: 1,786.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.30 : 1,837.13 = 1,298.85 : x
  2. Step 2: Convert to fraction form
    1,335.30/1,837.13 = 1,298.85/x
  3. Step 3: Cross multiply
    1,335.30x = 1,837.13 × 1,298.85
  4. Step 4: Simplify right side
    1,335.30x = 2,386,149.81
  5. Step 5: Solve for x
    x = 2,386,149.81/1,335.30
  6. Step 6: Final answer
    x = 1,786.98

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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.