Home / 1,319.04-1,813.68-1,178.28

Finding the Fourth Proportional to 1,319.04, 1,813.68 and 1,178.28

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Solution

The fourth proportional to 1,319.04, 1,813.68 and 1,178.28 is: 1,620.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.04 : 1,813.68 = 1,178.28 : x
  2. Step 2: Convert to fraction form
    1,319.04/1,813.68 = 1,178.28/x
  3. Step 3: Cross multiply
    1,319.04x = 1,813.68 × 1,178.28
  4. Step 4: Simplify right side
    1,319.04x = 2,137,022.87
  5. Step 5: Solve for x
    x = 2,137,022.87/1,319.04
  6. Step 6: Final answer
    x = 1,620.14

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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.