Home / 1,289.16-1,931.26-1,029.64

Finding the Fourth Proportional to 1,289.16, 1,931.26 and 1,029.64

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Solution

The fourth proportional to 1,289.16, 1,931.26 and 1,029.64 is: 1,542.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289.16 : 1,931.26 = 1,029.64 : x
  2. Step 2: Convert to fraction form
    1,289.16/1,931.26 = 1,029.64/x
  3. Step 3: Cross multiply
    1,289.16x = 1,931.26 × 1,029.64
  4. Step 4: Simplify right side
    1,289.16x = 1,988,502.55
  5. Step 5: Solve for x
    x = 1,988,502.55/1,289.16
  6. Step 6: Final answer
    x = 1,542.48

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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.