Home / 2,651.06-3,658.47-1,866.78

Finding the Fourth Proportional to 2,651.06, 3,658.47 and 1,866.78

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Solution

The fourth proportional to 2,651.06, 3,658.47 and 1,866.78 is: 2,576.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.06 : 3,658.47 = 1,866.78 : x
  2. Step 2: Convert to fraction form
    2,651.06/3,658.47 = 1,866.78/x
  3. Step 3: Cross multiply
    2,651.06x = 3,658.47 × 1,866.78
  4. Step 4: Simplify right side
    2,651.06x = 6,829,551.63
  5. Step 5: Solve for x
    x = 6,829,551.63/2,651.06
  6. Step 6: Final answer
    x = 2,576.16

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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.