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Finding the Fourth Proportional to 2,965.15, 4,446.22 and 990.07

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Solution

The fourth proportional to 2,965.15, 4,446.22 and 990.07 is: 1,484.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965.15 : 4,446.22 = 990.07 : x
  2. Step 2: Convert to fraction form
    2,965.15/4,446.22 = 990.07/x
  3. Step 3: Cross multiply
    2,965.15x = 4,446.22 × 990.07
  4. Step 4: Simplify right side
    2,965.15x = 4,402,085.10
  5. Step 5: Solve for x
    x = 4,402,085.10/2,965.15
  6. Step 6: Final answer
    x = 1,484.61

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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.