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Finding the Fourth Proportional to 2,854.95, 4,282.42 and 907.15

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Solution

The fourth proportional to 2,854.95, 4,282.42 and 907.15 is: 1,360.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.95 : 4,282.42 = 907.15 : x
  2. Step 2: Convert to fraction form
    2,854.95/4,282.42 = 907.15/x
  3. Step 3: Cross multiply
    2,854.95x = 4,282.42 × 907.15
  4. Step 4: Simplify right side
    2,854.95x = 3,884,794.06
  5. Step 5: Solve for x
    x = 3,884,794.06/2,854.95
  6. Step 6: Final answer
    x = 1,360.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.