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Finding the Fourth Proportional to 2,891.70, 4,341.60 and 2,276.10

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Solution

The fourth proportional to 2,891.70, 4,341.60 and 2,276.10 is: 3,417.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.70 : 4,341.60 = 2,276.10 : x
  2. Step 2: Convert to fraction form
    2,891.70/4,341.60 = 2,276.10/x
  3. Step 3: Cross multiply
    2,891.70x = 4,341.60 × 2,276.10
  4. Step 4: Simplify right side
    2,891.70x = 9,881,915.76
  5. Step 5: Solve for x
    x = 9,881,915.76/2,891.70
  6. Step 6: Final answer
    x = 3,417.34

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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.