Home / 1,335.87-1,990.65-1,298.25

Finding the Fourth Proportional to 1,335.87, 1,990.65 and 1,298.25

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Solution

The fourth proportional to 1,335.87, 1,990.65 and 1,298.25 is: 1,934.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.87 : 1,990.65 = 1,298.25 : x
  2. Step 2: Convert to fraction form
    1,335.87/1,990.65 = 1,298.25/x
  3. Step 3: Cross multiply
    1,335.87x = 1,990.65 × 1,298.25
  4. Step 4: Simplify right side
    1,335.87x = 2,584,361.36
  5. Step 5: Solve for x
    x = 2,584,361.36/1,335.87
  6. Step 6: Final answer
    x = 1,934.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.