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Finding the Fourth Proportional to 6,667.64, 10,003.08 and 1,987.46

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Solution

The fourth proportional to 6,667.64, 10,003.08 and 1,987.46 is: 2,981.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,667.64 : 10,003.08 = 1,987.46 : x
  2. Step 2: Convert to fraction form
    6,667.64/10,003.08 = 1,987.46/x
  3. Step 3: Cross multiply
    6,667.64x = 10,003.08 × 1,987.46
  4. Step 4: Simplify right side
    6,667.64x = 19,880,721.38
  5. Step 5: Solve for x
    x = 19,880,721.38/6,667.64
  6. Step 6: Final answer
    x = 2,981.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.