Home / 2,860.40-4,291.97-1,398.75

Finding the Fourth Proportional to 2,860.40, 4,291.97 and 1,398.75

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Solution

The fourth proportional to 2,860.40, 4,291.97 and 1,398.75 is: 2,098.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.40 : 4,291.97 = 1,398.75 : x
  2. Step 2: Convert to fraction form
    2,860.40/4,291.97 = 1,398.75/x
  3. Step 3: Cross multiply
    2,860.40x = 4,291.97 × 1,398.75
  4. Step 4: Simplify right side
    2,860.40x = 6,003,386.04
  5. Step 5: Solve for x
    x = 6,003,386.04/2,860.40
  6. Step 6: Final answer
    x = 2,098.80

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1.5x scale

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.