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Finding the Fourth Proportional to 3,070.92, 4,606.22 and 990.87

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Solution

The fourth proportional to 3,070.92, 4,606.22 and 990.87 is: 1,486.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,070.92 : 4,606.22 = 990.87 : x
  2. Step 2: Convert to fraction form
    3,070.92/4,606.22 = 990.87/x
  3. Step 3: Cross multiply
    3,070.92x = 4,606.22 × 990.87
  4. Step 4: Simplify right side
    3,070.92x = 4,564,160.26
  5. Step 5: Solve for x
    x = 4,564,160.26/3,070.92
  6. Step 6: Final answer
    x = 1,486.25

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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.