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Finding the Fourth Proportional to 7,045.95, 9,720.29 and 4,211.89

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Solution

The fourth proportional to 7,045.95, 9,720.29 and 4,211.89 is: 5,810.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,045.95 : 9,720.29 = 4,211.89 : x
  2. Step 2: Convert to fraction form
    7,045.95/9,720.29 = 4,211.89/x
  3. Step 3: Cross multiply
    7,045.95x = 9,720.29 × 4,211.89
  4. Step 4: Simplify right side
    7,045.95x = 40,940,792.25
  5. Step 5: Solve for x
    x = 40,940,792.25/7,045.95
  6. Step 6: Final answer
    x = 5,810.54

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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.