Home / 5,130.47-7,688.99-2,317.21

Finding the Fourth Proportional to 5,130.47, 7,688.99 and 2,317.21

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Solution

The fourth proportional to 5,130.47, 7,688.99 and 2,317.21 is: 3,472.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.47 : 7,688.99 = 2,317.21 : x
  2. Step 2: Convert to fraction form
    5,130.47/7,688.99 = 2,317.21/x
  3. Step 3: Cross multiply
    5,130.47x = 7,688.99 × 2,317.21
  4. Step 4: Simplify right side
    5,130.47x = 17,816,991.09
  5. Step 5: Solve for x
    x = 17,816,991.09/5,130.47
  6. Step 6: Final answer
    x = 3,472.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.