Home / 9,247.72-12,763.81-5,421.87

Finding the Fourth Proportional to 9,247.72, 12,763.81 and 5,421.87

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Solution

The fourth proportional to 9,247.72, 12,763.81 and 5,421.87 is: 7,483.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,247.72 : 12,763.81 = 5,421.87 : x
  2. Step 2: Convert to fraction form
    9,247.72/12,763.81 = 5,421.87/x
  3. Step 3: Cross multiply
    9,247.72x = 12,763.81 × 5,421.87
  4. Step 4: Simplify right side
    9,247.72x = 69,203,718.52
  5. Step 5: Solve for x
    x = 69,203,718.52/9,247.72
  6. Step 6: Final answer
    x = 7,483.33

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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.