Home / 3,210.42-4,430.34-1,813.20

Finding the Fourth Proportional to 3,210.42, 4,430.34 and 1,813.20

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Solution

The fourth proportional to 3,210.42, 4,430.34 and 1,813.20 is: 2,502.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.42 : 4,430.34 = 1,813.20 : x
  2. Step 2: Convert to fraction form
    3,210.42/4,430.34 = 1,813.20/x
  3. Step 3: Cross multiply
    3,210.42x = 4,430.34 × 1,813.20
  4. Step 4: Simplify right side
    3,210.42x = 8,033,092.49
  5. Step 5: Solve for x
    x = 8,033,092.49/3,210.42
  6. Step 6: Final answer
    x = 2,502.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.