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Finding the Fourth Proportional to 7,551.61, 10,420.21 and 4,193.53

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Solution

The fourth proportional to 7,551.61, 10,420.21 and 4,193.53 is: 5,786.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,551.61 : 10,420.21 = 4,193.53 : x
  2. Step 2: Convert to fraction form
    7,551.61/10,420.21 = 4,193.53/x
  3. Step 3: Cross multiply
    7,551.61x = 10,420.21 × 4,193.53
  4. Step 4: Simplify right side
    7,551.61x = 43,697,463.24
  5. Step 5: Solve for x
    x = 43,697,463.24/7,551.61
  6. Step 6: Final answer
    x = 5,786.51

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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.