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Finding the Fourth Proportional to 1,566.65, 2,161.40 and 937.19

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Solution

The fourth proportional to 1,566.65, 2,161.40 and 937.19 is: 1,292.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566.65 : 2,161.40 = 937.19 : x
  2. Step 2: Convert to fraction form
    1,566.65/2,161.40 = 937.19/x
  3. Step 3: Cross multiply
    1,566.65x = 2,161.40 × 937.19
  4. Step 4: Simplify right side
    1,566.65x = 2,025,648.46
  5. Step 5: Solve for x
    x = 2,025,648.46/1,566.65
  6. Step 6: Final answer
    x = 1,292.98

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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.