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Finding the Fourth Proportional to 7,719.03, 11,578.55 and 1,875.65

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Solution

The fourth proportional to 7,719.03, 11,578.55 and 1,875.65 is: 2,813.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.03 : 11,578.55 = 1,875.65 : x
  2. Step 2: Convert to fraction form
    7,719.03/11,578.55 = 1,875.65/x
  3. Step 3: Cross multiply
    7,719.03x = 11,578.55 × 1,875.65
  4. Step 4: Simplify right side
    7,719.03x = 21,717,240.04
  5. Step 5: Solve for x
    x = 21,717,240.04/7,719.03
  6. Step 6: Final answer
    x = 2,813.47

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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.