Home / 5,640.13-7,783.38-3,156.13

Finding the Fourth Proportional to 5,640.13, 7,783.38 and 3,156.13

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Solution

The fourth proportional to 5,640.13, 7,783.38 and 3,156.13 is: 4,355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.13 : 7,783.38 = 3,156.13 : x
  2. Step 2: Convert to fraction form
    5,640.13/7,783.38 = 3,156.13/x
  3. Step 3: Cross multiply
    5,640.13x = 7,783.38 × 3,156.13
  4. Step 4: Simplify right side
    5,640.13x = 24,565,304.42
  5. Step 5: Solve for x
    x = 24,565,304.42/5,640.13
  6. Step 6: Final answer
    x = 4,355.45

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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.