Home / 3,210.75-4,818.05-1,386.75

Finding the Fourth Proportional to 3,210.75, 4,818.05 and 1,386.75

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Solution

The fourth proportional to 3,210.75, 4,818.05 and 1,386.75 is: 2,080.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.75 : 4,818.05 = 1,386.75 : x
  2. Step 2: Convert to fraction form
    3,210.75/4,818.05 = 1,386.75/x
  3. Step 3: Cross multiply
    3,210.75x = 4,818.05 × 1,386.75
  4. Step 4: Simplify right side
    3,210.75x = 6,681,430.84
  5. Step 5: Solve for x
    x = 6,681,430.84/3,210.75
  6. Step 6: Final answer
    x = 2,080.96

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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.