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Finding the Fourth Proportional to 2,897.58, 4,309.10 and 2,805.32

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Solution

The fourth proportional to 2,897.58, 4,309.10 and 2,805.32 is: 4,171.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,897.58 : 4,309.10 = 2,805.32 : x
  2. Step 2: Convert to fraction form
    2,897.58/4,309.10 = 2,805.32/x
  3. Step 3: Cross multiply
    2,897.58x = 4,309.10 × 2,805.32
  4. Step 4: Simplify right side
    2,897.58x = 12,088,368.84
  5. Step 5: Solve for x
    x = 12,088,368.84/2,897.58
  6. Step 6: Final answer
    x = 4,171.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.