Home / 2,860.60-4,290.36-1,398.84

Finding the Fourth Proportional to 2,860.60, 4,290.36 and 1,398.84

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Solution

The fourth proportional to 2,860.60, 4,290.36 and 1,398.84 is: 2,098.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.60 : 4,290.36 = 1,398.84 : x
  2. Step 2: Convert to fraction form
    2,860.60/4,290.36 = 1,398.84/x
  3. Step 3: Cross multiply
    2,860.60x = 4,290.36 × 1,398.84
  4. Step 4: Simplify right side
    2,860.60x = 6,001,527.18
  5. Step 5: Solve for x
    x = 6,001,527.18/2,860.60
  6. Step 6: Final answer
    x = 2,098.00

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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.