Home / 9,988.81-13,784.69-5,512.75

Finding the Fourth Proportional to 9,988.81, 13,784.69 and 5,512.75

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Solution

The fourth proportional to 9,988.81, 13,784.69 and 5,512.75 is: 7,607.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.81 : 13,784.69 = 5,512.75 : x
  2. Step 2: Convert to fraction form
    9,988.81/13,784.69 = 5,512.75/x
  3. Step 3: Cross multiply
    9,988.81x = 13,784.69 × 5,512.75
  4. Step 4: Simplify right side
    9,988.81x = 75,991,549.80
  5. Step 5: Solve for x
    x = 75,991,549.80/9,988.81
  6. Step 6: Final answer
    x = 7,607.67

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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.