Home / 5,640.56-7,775.96-4,145.84

Finding the Fourth Proportional to 5,640.56, 7,775.96 and 4,145.84

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Solution

The fourth proportional to 5,640.56, 7,775.96 and 4,145.84 is: 5,715.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.56 : 7,775.96 = 4,145.84 : x
  2. Step 2: Convert to fraction form
    5,640.56/7,775.96 = 4,145.84/x
  3. Step 3: Cross multiply
    5,640.56x = 7,775.96 × 4,145.84
  4. Step 4: Simplify right side
    5,640.56x = 32,237,886.01
  5. Step 5: Solve for x
    x = 32,237,886.01/5,640.56
  6. Step 6: Final answer
    x = 5,715.37

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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.