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Finding the Fourth Proportional to 1,756.31, 2,423.64 and 1,009.76

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Solution

The fourth proportional to 1,756.31, 2,423.64 and 1,009.76 is: 1,393.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,756.31 : 2,423.64 = 1,009.76 : x
  2. Step 2: Convert to fraction form
    1,756.31/2,423.64 = 1,009.76/x
  3. Step 3: Cross multiply
    1,756.31x = 2,423.64 × 1,009.76
  4. Step 4: Simplify right side
    1,756.31x = 2,447,287.91
  5. Step 5: Solve for x
    x = 2,447,287.91/1,756.31
  6. Step 6: Final answer
    x = 1,393.43

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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.