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Finding the Fourth Proportional to 1,899.18, 2,849.40 and 925.20

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Solution

The fourth proportional to 1,899.18, 2,849.40 and 925.20 is: 1,388.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.18 : 2,849.40 = 925.20 : x
  2. Step 2: Convert to fraction form
    1,899.18/2,849.40 = 925.20/x
  3. Step 3: Cross multiply
    1,899.18x = 2,849.40 × 925.20
  4. Step 4: Simplify right side
    1,899.18x = 2,636,264.88
  5. Step 5: Solve for x
    x = 2,636,264.88/1,899.18
  6. Step 6: Final answer
    x = 1,388.11

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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.