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Finding the Fourth Proportional to 1,793.48, 2,689.07 and 856.04

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Solution

The fourth proportional to 1,793.48, 2,689.07 and 856.04 is: 1,283.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,793.48 : 2,689.07 = 856.04 : x
  2. Step 2: Convert to fraction form
    1,793.48/2,689.07 = 856.04/x
  3. Step 3: Cross multiply
    1,793.48x = 2,689.07 × 856.04
  4. Step 4: Simplify right side
    1,793.48x = 2,301,933.76
  5. Step 5: Solve for x
    x = 2,301,933.76/1,793.48
  6. Step 6: Final answer
    x = 1,283.50

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Double scale
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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.