Home / 5,715.36-7,887.42-4,315.68

Finding the Fourth Proportional to 5,715.36, 7,887.42 and 4,315.68

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Solution

The fourth proportional to 5,715.36, 7,887.42 and 4,315.68 is: 5,955.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.36 : 7,887.42 = 4,315.68 : x
  2. Step 2: Convert to fraction form
    5,715.36/7,887.42 = 4,315.68/x
  3. Step 3: Cross multiply
    5,715.36x = 7,887.42 × 4,315.68
  4. Step 4: Simplify right side
    5,715.36x = 34,039,580.75
  5. Step 5: Solve for x
    x = 34,039,580.75/5,715.36
  6. Step 6: Final answer
    x = 5,955.81

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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.