Home / 9,187.81-12,681.43-5,211.25

Finding the Fourth Proportional to 9,187.81, 12,681.43 and 5,211.25

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Solution

The fourth proportional to 9,187.81, 12,681.43 and 5,211.25 is: 7,192.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,187.81 : 12,681.43 = 5,211.25 : x
  2. Step 2: Convert to fraction form
    9,187.81/12,681.43 = 5,211.25/x
  3. Step 3: Cross multiply
    9,187.81x = 12,681.43 × 5,211.25
  4. Step 4: Simplify right side
    9,187.81x = 66,086,057.36
  5. Step 5: Solve for x
    x = 66,086,057.36/9,187.81
  6. Step 6: Final answer
    x = 7,192.80

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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.