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Finding the Fourth Proportional to 2,890.17, 4,335.55 and 810.18

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Solution

The fourth proportional to 2,890.17, 4,335.55 and 810.18 is: 1,215.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.17 : 4,335.55 = 810.18 : x
  2. Step 2: Convert to fraction form
    2,890.17/4,335.55 = 810.18/x
  3. Step 3: Cross multiply
    2,890.17x = 4,335.55 × 810.18
  4. Step 4: Simplify right side
    2,890.17x = 3,512,573.87
  5. Step 5: Solve for x
    x = 3,512,573.87/2,890.17
  6. Step 6: Final answer
    x = 1,215.35

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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.