Home / 3,210.81-4,430.75-1,866.46

Finding the Fourth Proportional to 3,210.81, 4,430.75 and 1,866.46

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Solution

The fourth proportional to 3,210.81, 4,430.75 and 1,866.46 is: 2,575.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.81 : 4,430.75 = 1,866.46 : x
  2. Step 2: Convert to fraction form
    3,210.81/4,430.75 = 1,866.46/x
  3. Step 3: Cross multiply
    3,210.81x = 4,430.75 × 1,866.46
  4. Step 4: Simplify right side
    3,210.81x = 8,269,816.04
  5. Step 5: Solve for x
    x = 8,269,816.04/3,210.81
  6. Step 6: Final answer
    x = 2,575.62

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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.