Home / 4,140.39-6,210.69-1,218.80

Finding the Fourth Proportional to 4,140.39, 6,210.69 and 1,218.80

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Solution

The fourth proportional to 4,140.39, 6,210.69 and 1,218.80 is: 1,828.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.39 : 6,210.69 = 1,218.80 : x
  2. Step 2: Convert to fraction form
    4,140.39/6,210.69 = 1,218.80/x
  3. Step 3: Cross multiply
    4,140.39x = 6,210.69 × 1,218.80
  4. Step 4: Simplify right side
    4,140.39x = 7,569,557.92
  5. Step 5: Solve for x
    x = 7,569,557.92/4,140.39
  6. Step 6: Final answer
    x = 1,828.22

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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.