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Finding the Fourth Proportional to 7,210.47, 9,954.95 and 5,528.64

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Solution

The fourth proportional to 7,210.47, 9,954.95 and 5,528.64 is: 7,632.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,210.47 : 9,954.95 = 5,528.64 : x
  2. Step 2: Convert to fraction form
    7,210.47/9,954.95 = 5,528.64/x
  3. Step 3: Cross multiply
    7,210.47x = 9,954.95 × 5,528.64
  4. Step 4: Simplify right side
    7,210.47x = 55,037,361.56
  5. Step 5: Solve for x
    x = 55,037,361.56/7,210.47
  6. Step 6: Final answer
    x = 7,632.98

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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.