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Finding the Fourth Proportional to 1,862.79, 2,794.79 and 630.30

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Solution

The fourth proportional to 1,862.79, 2,794.79 and 630.30 is: 945.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,862.79 : 2,794.79 = 630.30 : x
  2. Step 2: Convert to fraction form
    1,862.79/2,794.79 = 630.30/x
  3. Step 3: Cross multiply
    1,862.79x = 2,794.79 × 630.30
  4. Step 4: Simplify right side
    1,862.79x = 1,761,556.14
  5. Step 5: Solve for x
    x = 1,761,556.14/1,862.79
  6. Step 6: Final answer
    x = 945.65

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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.