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Finding the Fourth Proportional to 1,346.61, 2,019.18 and 907.86

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Solution

The fourth proportional to 1,346.61, 2,019.18 and 907.86 is: 1,361.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,346.61 : 2,019.18 = 907.86 : x
  2. Step 2: Convert to fraction form
    1,346.61/2,019.18 = 907.86/x
  3. Step 3: Cross multiply
    1,346.61x = 2,019.18 × 907.86
  4. Step 4: Simplify right side
    1,346.61x = 1,833,132.75
  5. Step 5: Solve for x
    x = 1,833,132.75/1,346.61
  6. Step 6: Final answer
    x = 1,361.29

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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.