Home / 7,719.10-11,578.64-1,875.67

Finding the Fourth Proportional to 7,719.10, 11,578.64 and 1,875.67

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Solution

The fourth proportional to 7,719.10, 11,578.64 and 1,875.67 is: 2,813.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.10 : 11,578.64 = 1,875.67 : x
  2. Step 2: Convert to fraction form
    7,719.10/11,578.64 = 1,875.67/x
  3. Step 3: Cross multiply
    7,719.10x = 11,578.64 × 1,875.67
  4. Step 4: Simplify right side
    7,719.10x = 21,717,707.69
  5. Step 5: Solve for x
    x = 21,717,707.69/7,719.10
  6. Step 6: Final answer
    x = 2,813.50

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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.