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Finding the Fourth Proportional to 7,223.81, 9,962.18 and 5,545.28

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Solution

The fourth proportional to 7,223.81, 9,962.18 and 5,545.28 is: 7,647.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,223.81 : 9,962.18 = 5,545.28 : x
  2. Step 2: Convert to fraction form
    7,223.81/9,962.18 = 5,545.28/x
  3. Step 3: Cross multiply
    7,223.81x = 9,962.18 × 5,545.28
  4. Step 4: Simplify right side
    7,223.81x = 55,243,077.51
  5. Step 5: Solve for x
    x = 55,243,077.51/7,223.81
  6. Step 6: Final answer
    x = 7,647.37

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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.