Home / 8,140.37-11,237.49-5,160.24

Finding the Fourth Proportional to 8,140.37, 11,237.49 and 5,160.24

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Solution

The fourth proportional to 8,140.37, 11,237.49 and 5,160.24 is: 7,123.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.37 : 11,237.49 = 5,160.24 : x
  2. Step 2: Convert to fraction form
    8,140.37/11,237.49 = 5,160.24/x
  3. Step 3: Cross multiply
    8,140.37x = 11,237.49 × 5,160.24
  4. Step 4: Simplify right side
    8,140.37x = 57,988,145.40
  5. Step 5: Solve for x
    x = 57,988,145.40/8,140.37
  6. Step 6: Final answer
    x = 7,123.53

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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.