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Finding the Fourth Proportional to 6,889.34, 9,521.28 and 5,210.21

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Solution

The fourth proportional to 6,889.34, 9,521.28 and 5,210.21 is: 7,200.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,889.34 : 9,521.28 = 5,210.21 : x
  2. Step 2: Convert to fraction form
    6,889.34/9,521.28 = 5,210.21/x
  3. Step 3: Cross multiply
    6,889.34x = 9,521.28 × 5,210.21
  4. Step 4: Simplify right side
    6,889.34x = 49,607,820.66
  5. Step 5: Solve for x
    x = 49,607,820.66/6,889.34
  6. Step 6: Final answer
    x = 7,200.67

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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.