Home / 2,818.65-3,889.40-1,559.55

Finding the Fourth Proportional to 2,818.65, 3,889.40 and 1,559.55

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Solution

The fourth proportional to 2,818.65, 3,889.40 and 1,559.55 is: 2,151.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.65 : 3,889.40 = 1,559.55 : x
  2. Step 2: Convert to fraction form
    2,818.65/3,889.40 = 1,559.55/x
  3. Step 3: Cross multiply
    2,818.65x = 3,889.40 × 1,559.55
  4. Step 4: Simplify right side
    2,818.65x = 6,065,713.77
  5. Step 5: Solve for x
    x = 6,065,713.77/2,818.65
  6. Step 6: Final answer
    x = 2,151.99

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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.