Home / 7,109.11-9,813.28-5,345.84

Finding the Fourth Proportional to 7,109.11, 9,813.28 and 5,345.84

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Solution

The fourth proportional to 7,109.11, 9,813.28 and 5,345.84 is: 7,379.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.11 : 9,813.28 = 5,345.84 : x
  2. Step 2: Convert to fraction form
    7,109.11/9,813.28 = 5,345.84/x
  3. Step 3: Cross multiply
    7,109.11x = 9,813.28 × 5,345.84
  4. Step 4: Simplify right side
    7,109.11x = 52,460,224.76
  5. Step 5: Solve for x
    x = 52,460,224.76/7,109.11
  6. Step 6: Final answer
    x = 7,379.30

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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.