Home / 4,807.80-7,197.30-4,289.40

Finding the Fourth Proportional to 4,807.80, 7,197.30 and 4,289.40

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Solution

The fourth proportional to 4,807.80, 7,197.30 and 4,289.40 is: 6,421.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,807.80 : 7,197.30 = 4,289.40 : x
  2. Step 2: Convert to fraction form
    4,807.80/7,197.30 = 4,289.40/x
  3. Step 3: Cross multiply
    4,807.80x = 7,197.30 × 4,289.40
  4. Step 4: Simplify right side
    4,807.80x = 30,872,098.62
  5. Step 5: Solve for x
    x = 30,872,098.62/4,807.80
  6. Step 6: Final answer
    x = 6,421.25

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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.