Home / 5,783.28-7,980.96-3,130.72

Finding the Fourth Proportional to 5,783.28, 7,980.96 and 3,130.72

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Solution

The fourth proportional to 5,783.28, 7,980.96 and 3,130.72 is: 4,320.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,783.28 : 7,980.96 = 3,130.72 : x
  2. Step 2: Convert to fraction form
    5,783.28/7,980.96 = 3,130.72/x
  3. Step 3: Cross multiply
    5,783.28x = 7,980.96 × 3,130.72
  4. Step 4: Simplify right side
    5,783.28x = 24,986,151.09
  5. Step 5: Solve for x
    x = 24,986,151.09/5,783.28
  6. Step 6: Final answer
    x = 4,320.41

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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.