Home / 5,189.13-7,782.48-1,490.67

Finding the Fourth Proportional to 5,189.13, 7,782.48 and 1,490.67

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Solution

The fourth proportional to 5,189.13, 7,782.48 and 1,490.67 is: 2,235.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.13 : 7,782.48 = 1,490.67 : x
  2. Step 2: Convert to fraction form
    5,189.13/7,782.48 = 1,490.67/x
  3. Step 3: Cross multiply
    5,189.13x = 7,782.48 × 1,490.67
  4. Step 4: Simplify right side
    5,189.13x = 11,601,109.46
  5. Step 5: Solve for x
    x = 11,601,109.46/5,189.13
  6. Step 6: Final answer
    x = 2,235.66

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1.5x scale

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.