Home / 1,637.78-2,259.77-929.45

Finding the Fourth Proportional to 1,637.78, 2,259.77 and 929.45

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Solution

The fourth proportional to 1,637.78, 2,259.77 and 929.45 is: 1,282.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.78 : 2,259.77 = 929.45 : x
  2. Step 2: Convert to fraction form
    1,637.78/2,259.77 = 929.45/x
  3. Step 3: Cross multiply
    1,637.78x = 2,259.77 × 929.45
  4. Step 4: Simplify right side
    1,637.78x = 2,100,344.23
  5. Step 5: Solve for x
    x = 2,100,344.23/1,637.78
  6. Step 6: Final answer
    x = 1,282.43

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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.