Home / 5,190.30-7,785.45-4,038.30

Finding the Fourth Proportional to 5,190.30, 7,785.45 and 4,038.30

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Solution

The fourth proportional to 5,190.30, 7,785.45 and 4,038.30 is: 6,057.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.30 : 7,785.45 = 4,038.30 : x
  2. Step 2: Convert to fraction form
    5,190.30/7,785.45 = 4,038.30/x
  3. Step 3: Cross multiply
    5,190.30x = 7,785.45 × 4,038.30
  4. Step 4: Simplify right side
    5,190.30x = 31,439,982.74
  5. Step 5: Solve for x
    x = 31,439,982.74/5,190.30
  6. Step 6: Final answer
    x = 6,057.45

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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.