Home / 2,651.15-3,656.50-1,854.21

Finding the Fourth Proportional to 2,651.15, 3,656.50 and 1,854.21

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Solution

The fourth proportional to 2,651.15, 3,656.50 and 1,854.21 is: 2,557.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.15 : 3,656.50 = 1,854.21 : x
  2. Step 2: Convert to fraction form
    2,651.15/3,656.50 = 1,854.21/x
  3. Step 3: Cross multiply
    2,651.15x = 3,656.50 × 1,854.21
  4. Step 4: Simplify right side
    2,651.15x = 6,779,918.87
  5. Step 5: Solve for x
    x = 6,779,918.87/2,651.15
  6. Step 6: Final answer
    x = 2,557.35

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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.