Home / 1,290.15-1,934.19-559.67

Finding the Fourth Proportional to 1,290.15, 1,934.19 and 559.67

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Solution

The fourth proportional to 1,290.15, 1,934.19 and 559.67 is: 839.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290.15 : 1,934.19 = 559.67 : x
  2. Step 2: Convert to fraction form
    1,290.15/1,934.19 = 559.67/x
  3. Step 3: Cross multiply
    1,290.15x = 1,934.19 × 559.67
  4. Step 4: Simplify right side
    1,290.15x = 1,082,498.45
  5. Step 5: Solve for x
    x = 1,082,498.45/1,290.15
  6. Step 6: Final answer
    x = 839.05

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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.