Home / 9,210.00-12,709.81-5,231.13

Finding the Fourth Proportional to 9,210.00, 12,709.81 and 5,231.13

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Solution

The fourth proportional to 9,210.00, 12,709.81 and 5,231.13 is: 7,218.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,210.00 : 12,709.81 = 5,231.13 : x
  2. Step 2: Convert to fraction form
    9,210.00/12,709.81 = 5,231.13/x
  3. Step 3: Cross multiply
    9,210.00x = 12,709.81 × 5,231.13
  4. Step 4: Simplify right side
    9,210.00x = 66,486,698.76
  5. Step 5: Solve for x
    x = 66,486,698.76/9,210.00
  6. Step 6: Final answer
    x = 7,218.97

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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.