Home / 6,400.40-9,600.24-1,783.28

Finding the Fourth Proportional to 6,400.40, 9,600.24 and 1,783.28

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Solution

The fourth proportional to 6,400.40, 9,600.24 and 1,783.28 is: 2,674.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,400.40 : 9,600.24 = 1,783.28 : x
  2. Step 2: Convert to fraction form
    6,400.40/9,600.24 = 1,783.28/x
  3. Step 3: Cross multiply
    6,400.40x = 9,600.24 × 1,783.28
  4. Step 4: Simplify right side
    6,400.40x = 17,119,915.99
  5. Step 5: Solve for x
    x = 17,119,915.99/6,400.40
  6. Step 6: Final answer
    x = 2,674.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.