Home / 1,107.14-1,525.47-929.48

Finding the Fourth Proportional to 1,107.14, 1,525.47 and 929.48

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Solution

The fourth proportional to 1,107.14, 1,525.47 and 929.48 is: 1,280.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107.14 : 1,525.47 = 929.48 : x
  2. Step 2: Convert to fraction form
    1,107.14/1,525.47 = 929.48/x
  3. Step 3: Cross multiply
    1,107.14x = 1,525.47 × 929.48
  4. Step 4: Simplify right side
    1,107.14x = 1,417,893.86
  5. Step 5: Solve for x
    x = 1,417,893.86/1,107.14
  6. Step 6: Final answer
    x = 1,280.68

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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.