Home / 2,945.15-4,064.52-1,948.70

Finding the Fourth Proportional to 2,945.15, 4,064.52 and 1,948.70

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Solution

The fourth proportional to 2,945.15, 4,064.52 and 1,948.70 is: 2,689.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.15 : 4,064.52 = 1,948.70 : x
  2. Step 2: Convert to fraction form
    2,945.15/4,064.52 = 1,948.70/x
  3. Step 3: Cross multiply
    2,945.15x = 4,064.52 × 1,948.70
  4. Step 4: Simplify right side
    2,945.15x = 7,920,530.12
  5. Step 5: Solve for x
    x = 7,920,530.12/2,945.15
  6. Step 6: Final answer
    x = 2,689.35

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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.