Home / 5,783.40-7,981.00-3,130.79

Finding the Fourth Proportional to 5,783.40, 7,981.00 and 3,130.79

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Solution

The fourth proportional to 5,783.40, 7,981.00 and 3,130.79 is: 4,320.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,783.40 : 7,981.00 = 3,130.79 : x
  2. Step 2: Convert to fraction form
    5,783.40/7,981.00 = 3,130.79/x
  3. Step 3: Cross multiply
    5,783.40x = 7,981.00 × 3,130.79
  4. Step 4: Simplify right side
    5,783.40x = 24,986,787.26
  5. Step 5: Solve for x
    x = 24,986,787.26/5,783.40
  6. Step 6: Final answer
    x = 4,320.43

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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.