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Finding the Fourth Proportional to 1,899.90, 2,848.68 and 803.64

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Solution

The fourth proportional to 1,899.90, 2,848.68 and 803.64 is: 1,204.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.90 : 2,848.68 = 803.64 : x
  2. Step 2: Convert to fraction form
    1,899.90/2,848.68 = 803.64/x
  3. Step 3: Cross multiply
    1,899.90x = 2,848.68 × 803.64
  4. Step 4: Simplify right side
    1,899.90x = 2,289,313.20
  5. Step 5: Solve for x
    x = 2,289,313.20/1,899.90
  6. Step 6: Final answer
    x = 1,204.97

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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.