Home / 1,612.81-2,226.74-1,239.10

Finding the Fourth Proportional to 1,612.81, 2,226.74 and 1,239.10

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Solution

The fourth proportional to 1,612.81, 2,226.74 and 1,239.10 is: 1,710.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.81 : 2,226.74 = 1,239.10 : x
  2. Step 2: Convert to fraction form
    1,612.81/2,226.74 = 1,239.10/x
  3. Step 3: Cross multiply
    1,612.81x = 2,226.74 × 1,239.10
  4. Step 4: Simplify right side
    1,612.81x = 2,759,148.74
  5. Step 5: Solve for x
    x = 2,759,148.74/1,612.81
  6. Step 6: Final answer
    x = 1,710.77

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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.