Home / 9,115.29-12,582.23-5,339.67

Finding the Fourth Proportional to 9,115.29, 12,582.23 and 5,339.67

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Solution

The fourth proportional to 9,115.29, 12,582.23 and 5,339.67 is: 7,370.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.29 : 12,582.23 = 5,339.67 : x
  2. Step 2: Convert to fraction form
    9,115.29/12,582.23 = 5,339.67/x
  3. Step 3: Cross multiply
    9,115.29x = 12,582.23 × 5,339.67
  4. Step 4: Simplify right side
    9,115.29x = 67,184,882.18
  5. Step 5: Solve for x
    x = 67,184,882.18/9,115.29
  6. Step 6: Final answer
    x = 7,370.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.