Home / 9,216.98-12,720.35-5,441.39

Finding the Fourth Proportional to 9,216.98, 12,720.35 and 5,441.39

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Solution

The fourth proportional to 9,216.98, 12,720.35 and 5,441.39 is: 7,509.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,216.98 : 12,720.35 = 5,441.39 : x
  2. Step 2: Convert to fraction form
    9,216.98/12,720.35 = 5,441.39/x
  3. Step 3: Cross multiply
    9,216.98x = 12,720.35 × 5,441.39
  4. Step 4: Simplify right side
    9,216.98x = 69,216,358.08
  5. Step 5: Solve for x
    x = 69,216,358.08/9,216.98
  6. Step 6: Final answer
    x = 7,509.66

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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.