Home / 4,230.80-6,345.60-1,309.40

Finding the Fourth Proportional to 4,230.80, 6,345.60 and 1,309.40

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Solution

The fourth proportional to 4,230.80, 6,345.60 and 1,309.40 is: 1,963.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,230.80 : 6,345.60 = 1,309.40 : x
  2. Step 2: Convert to fraction form
    4,230.80/6,345.60 = 1,309.40/x
  3. Step 3: Cross multiply
    4,230.80x = 6,345.60 × 1,309.40
  4. Step 4: Simplify right side
    4,230.80x = 8,308,928.64
  5. Step 5: Solve for x
    x = 8,308,928.64/4,230.80
  6. Step 6: Final answer
    x = 1,963.91

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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.