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Finding the Fourth Proportional to 6,390.19, 9,585.28 and 5,975.11

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Solution

The fourth proportional to 6,390.19, 9,585.28 and 5,975.11 is: 8,962.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.19 : 9,585.28 = 5,975.11 : x
  2. Step 2: Convert to fraction form
    6,390.19/9,585.28 = 5,975.11/x
  3. Step 3: Cross multiply
    6,390.19x = 9,585.28 × 5,975.11
  4. Step 4: Simplify right side
    6,390.19x = 57,273,102.38
  5. Step 5: Solve for x
    x = 57,273,102.38/6,390.19
  6. Step 6: Final answer
    x = 8,962.67

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Double scale
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Similar ratio
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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.