Home / 9,210.40-12,710.67-5,231.38

Finding the Fourth Proportional to 9,210.40, 12,710.67 and 5,231.38

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Solution

The fourth proportional to 9,210.40, 12,710.67 and 5,231.38 is: 7,219.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,210.40 : 12,710.67 = 5,231.38 : x
  2. Step 2: Convert to fraction form
    9,210.40/12,710.67 = 5,231.38/x
  3. Step 3: Cross multiply
    9,210.40x = 12,710.67 × 5,231.38
  4. Step 4: Simplify right side
    9,210.40x = 66,494,344.82
  5. Step 5: Solve for x
    x = 66,494,344.82/9,210.40
  6. Step 6: Final answer
    x = 7,219.49

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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.