Home / 2,218.49-3,061.47-1,210.20

Finding the Fourth Proportional to 2,218.49, 3,061.47 and 1,210.20

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Solution

The fourth proportional to 2,218.49, 3,061.47 and 1,210.20 is: 1,670.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.49 : 3,061.47 = 1,210.20 : x
  2. Step 2: Convert to fraction form
    2,218.49/3,061.47 = 1,210.20/x
  3. Step 3: Cross multiply
    2,218.49x = 3,061.47 × 1,210.20
  4. Step 4: Simplify right side
    2,218.49x = 3,704,990.99
  5. Step 5: Solve for x
    x = 3,704,990.99/2,218.49
  6. Step 6: Final answer
    x = 1,670.05

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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.