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Finding the Fourth Proportional to 2,507.40, 3,761.14 and 776

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Solution

The fourth proportional to 2,507.40, 3,761.14 and 776 is: 1,164.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,507.40 : 3,761.14 = 776 : x
  2. Step 2: Convert to fraction form
    2,507.40/3,761.14 = 776/x
  3. Step 3: Cross multiply
    2,507.40x = 3,761.14 × 776
  4. Step 4: Simplify right side
    2,507.40x = 2,918,644.64
  5. Step 5: Solve for x
    x = 2,918,644.64/2,507.40
  6. Step 6: Final answer
    x = 1,164.01

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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.