Home / 5,145.23-7,721.73-3,389.63

Finding the Fourth Proportional to 5,145.23, 7,721.73 and 3,389.63

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Solution

The fourth proportional to 5,145.23, 7,721.73 and 3,389.63 is: 5,087.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.23 : 7,721.73 = 3,389.63 : x
  2. Step 2: Convert to fraction form
    5,145.23/7,721.73 = 3,389.63/x
  3. Step 3: Cross multiply
    5,145.23x = 7,721.73 × 3,389.63
  4. Step 4: Simplify right side
    5,145.23x = 26,173,769.05
  5. Step 5: Solve for x
    x = 26,173,769.05/5,145.23
  6. Step 6: Final answer
    x = 5,087.00

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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.