Home / 2,289.12-3,430.32-1,640.16

Finding the Fourth Proportional to 2,289.12, 3,430.32 and 1,640.16

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Solution

The fourth proportional to 2,289.12, 3,430.32 and 1,640.16 is: 2,457.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.12 : 3,430.32 = 1,640.16 : x
  2. Step 2: Convert to fraction form
    2,289.12/3,430.32 = 1,640.16/x
  3. Step 3: Cross multiply
    2,289.12x = 3,430.32 × 1,640.16
  4. Step 4: Simplify right side
    2,289.12x = 5,626,273.65
  5. Step 5: Solve for x
    x = 5,626,273.65/2,289.12
  6. Step 6: Final answer
    x = 2,457.83

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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.