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Finding the Fourth Proportional to 1,703.78, 2,347.02 and 1,455.92

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Solution

The fourth proportional to 1,703.78, 2,347.02 and 1,455.92 is: 2,005.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,703.78 : 2,347.02 = 1,455.92 : x
  2. Step 2: Convert to fraction form
    1,703.78/2,347.02 = 1,455.92/x
  3. Step 3: Cross multiply
    1,703.78x = 2,347.02 × 1,455.92
  4. Step 4: Simplify right side
    1,703.78x = 3,417,061.62
  5. Step 5: Solve for x
    x = 3,417,061.62/1,703.78
  6. Step 6: Final answer
    x = 2,005.58

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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.