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Finding the Fourth Proportional to 5,328.70, 7,353.78 and 2,971.06

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Solution

The fourth proportional to 5,328.70, 7,353.78 and 2,971.06 is: 4,100.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.70 : 7,353.78 = 2,971.06 : x
  2. Step 2: Convert to fraction form
    5,328.70/7,353.78 = 2,971.06/x
  3. Step 3: Cross multiply
    5,328.70x = 7,353.78 × 2,971.06
  4. Step 4: Simplify right side
    5,328.70x = 21,848,521.61
  5. Step 5: Solve for x
    x = 21,848,521.61/5,328.70
  6. Step 6: Final answer
    x = 4,100.16

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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.