Home / 3,210.80-4,430.88-1,813.52

Finding the Fourth Proportional to 3,210.80, 4,430.88 and 1,813.52

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Solution

The fourth proportional to 3,210.80, 4,430.88 and 1,813.52 is: 2,502.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.80 : 4,430.88 = 1,813.52 : x
  2. Step 2: Convert to fraction form
    3,210.80/4,430.88 = 1,813.52/x
  3. Step 3: Cross multiply
    3,210.80x = 4,430.88 × 1,813.52
  4. Step 4: Simplify right side
    3,210.80x = 8,035,489.50
  5. Step 5: Solve for x
    x = 8,035,489.50/3,210.80
  6. Step 6: Final answer
    x = 2,502.64

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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.