Home / 2,075.22-2,862.95-1,288.71

Finding the Fourth Proportional to 2,075.22, 2,862.95 and 1,288.71

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Solution

The fourth proportional to 2,075.22, 2,862.95 and 1,288.71 is: 1,777.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,075.22 : 2,862.95 = 1,288.71 : x
  2. Step 2: Convert to fraction form
    2,075.22/2,862.95 = 1,288.71/x
  3. Step 3: Cross multiply
    2,075.22x = 2,862.95 × 1,288.71
  4. Step 4: Simplify right side
    2,075.22x = 3,689,505.85
  5. Step 5: Solve for x
    x = 3,689,505.85/2,075.22
  6. Step 6: Final answer
    x = 1,777.89

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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.