Home / 5,143.51-7,715.63-2,545.75

Finding the Fourth Proportional to 5,143.51, 7,715.63 and 2,545.75

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Solution

The fourth proportional to 5,143.51, 7,715.63 and 2,545.75 is: 3,818.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.51 : 7,715.63 = 2,545.75 : x
  2. Step 2: Convert to fraction form
    5,143.51/7,715.63 = 2,545.75/x
  3. Step 3: Cross multiply
    5,143.51x = 7,715.63 × 2,545.75
  4. Step 4: Simplify right side
    5,143.51x = 19,642,065.07
  5. Step 5: Solve for x
    x = 19,642,065.07/5,143.51
  6. Step 6: Final answer
    x = 3,818.81

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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.