Home / 2,862.18-4,290.84-913.32

Finding the Fourth Proportional to 2,862.18, 4,290.84 and 913.32

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Solution

The fourth proportional to 2,862.18, 4,290.84 and 913.32 is: 1,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.18 : 4,290.84 = 913.32 : x
  2. Step 2: Convert to fraction form
    2,862.18/4,290.84 = 913.32/x
  3. Step 3: Cross multiply
    2,862.18x = 4,290.84 × 913.32
  4. Step 4: Simplify right side
    2,862.18x = 3,918,909.99
  5. Step 5: Solve for x
    x = 3,918,909.99/2,862.18
  6. Step 6: Final answer
    x = 1,369.20

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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.