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Finding the Fourth Proportional to 1,319.92, 1,819.84 and 846.98

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Solution

The fourth proportional to 1,319.92, 1,819.84 and 846.98 is: 1,167.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.92 : 1,819.84 = 846.98 : x
  2. Step 2: Convert to fraction form
    1,319.92/1,819.84 = 846.98/x
  3. Step 3: Cross multiply
    1,319.92x = 1,819.84 × 846.98
  4. Step 4: Simplify right side
    1,319.92x = 1,541,368.93
  5. Step 5: Solve for x
    x = 1,541,368.93/1,319.92
  6. Step 6: Final answer
    x = 1,167.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.