Home / 2,199.95-3,298.90-1,275.77

Finding the Fourth Proportional to 2,199.95, 3,298.90 and 1,275.77

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Solution

The fourth proportional to 2,199.95, 3,298.90 and 1,275.77 is: 1,913.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.95 : 3,298.90 = 1,275.77 : x
  2. Step 2: Convert to fraction form
    2,199.95/3,298.90 = 1,275.77/x
  3. Step 3: Cross multiply
    2,199.95x = 3,298.90 × 1,275.77
  4. Step 4: Simplify right side
    2,199.95x = 4,208,637.65
  5. Step 5: Solve for x
    x = 4,208,637.65/2,199.95
  6. Step 6: Final answer
    x = 1,913.06

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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.