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Finding the Fourth Proportional to 1,564.33, 2,158.84 and 901.19

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Solution

The fourth proportional to 1,564.33, 2,158.84 and 901.19 is: 1,243.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,564.33 : 2,158.84 = 901.19 : x
  2. Step 2: Convert to fraction form
    1,564.33/2,158.84 = 901.19/x
  3. Step 3: Cross multiply
    1,564.33x = 2,158.84 × 901.19
  4. Step 4: Simplify right side
    1,564.33x = 1,945,525.02
  5. Step 5: Solve for x
    x = 1,945,525.02/1,564.33
  6. Step 6: Final answer
    x = 1,243.68

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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.