Home / 1,037.20-1,433.62-788.92

Finding the Fourth Proportional to 1,037.20, 1,433.62 and 788.92

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Solution

The fourth proportional to 1,037.20, 1,433.62 and 788.92 is: 1,090.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,037.20 : 1,433.62 = 788.92 : x
  2. Step 2: Convert to fraction form
    1,037.20/1,433.62 = 788.92/x
  3. Step 3: Cross multiply
    1,037.20x = 1,433.62 × 788.92
  4. Step 4: Simplify right side
    1,037.20x = 1,131,011.49
  5. Step 5: Solve for x
    x = 1,131,011.49/1,037.20
  6. Step 6: Final answer
    x = 1,090.45

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1.5x scale

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.