Home / 2,777.80-4,167.47-1,790.95

Finding the Fourth Proportional to 2,777.80, 4,167.47 and 1,790.95

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Solution

The fourth proportional to 2,777.80, 4,167.47 and 1,790.95 is: 2,686.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,777.80 : 4,167.47 = 1,790.95 : x
  2. Step 2: Convert to fraction form
    2,777.80/4,167.47 = 1,790.95/x
  3. Step 3: Cross multiply
    2,777.80x = 4,167.47 × 1,790.95
  4. Step 4: Simplify right side
    2,777.80x = 7,463,730.40
  5. Step 5: Solve for x
    x = 7,463,730.40/2,777.80
  6. Step 6: Final answer
    x = 2,686.92

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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.