Home / 2,945.63-4,065.12-1,686.69

Finding the Fourth Proportional to 2,945.63, 4,065.12 and 1,686.69

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Solution

The fourth proportional to 2,945.63, 4,065.12 and 1,686.69 is: 2,327.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.63 : 4,065.12 = 1,686.69 : x
  2. Step 2: Convert to fraction form
    2,945.63/4,065.12 = 1,686.69/x
  3. Step 3: Cross multiply
    2,945.63x = 4,065.12 × 1,686.69
  4. Step 4: Simplify right side
    2,945.63x = 6,856,597.25
  5. Step 5: Solve for x
    x = 6,856,597.25/2,945.63
  6. Step 6: Final answer
    x = 2,327.72

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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.