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Finding the Fourth Proportional to 1,611.46, 2,223.48 and 948.16

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Solution

The fourth proportional to 1,611.46, 2,223.48 and 948.16 is: 1,308.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.46 : 2,223.48 = 948.16 : x
  2. Step 2: Convert to fraction form
    1,611.46/2,223.48 = 948.16/x
  3. Step 3: Cross multiply
    1,611.46x = 2,223.48 × 948.16
  4. Step 4: Simplify right side
    1,611.46x = 2,108,214.80
  5. Step 5: Solve for x
    x = 2,108,214.80/1,611.46
  6. Step 6: Final answer
    x = 1,308.26

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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.