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Finding the Fourth Proportional to 1,939.01, 2,907.20 and 897.59

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Solution

The fourth proportional to 1,939.01, 2,907.20 and 897.59 is: 1,345.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.01 : 2,907.20 = 897.59 : x
  2. Step 2: Convert to fraction form
    1,939.01/2,907.20 = 897.59/x
  3. Step 3: Cross multiply
    1,939.01x = 2,907.20 × 897.59
  4. Step 4: Simplify right side
    1,939.01x = 2,609,483.16
  5. Step 5: Solve for x
    x = 2,609,483.16/1,939.01
  6. Step 6: Final answer
    x = 1,345.78

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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.