Home / 1,768.36-2,639.17-1,722.28

Finding the Fourth Proportional to 1,768.36, 2,639.17 and 1,722.28

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Solution

The fourth proportional to 1,768.36, 2,639.17 and 1,722.28 is: 2,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.36 : 2,639.17 = 1,722.28 : x
  2. Step 2: Convert to fraction form
    1,768.36/2,639.17 = 1,722.28/x
  3. Step 3: Cross multiply
    1,768.36x = 2,639.17 × 1,722.28
  4. Step 4: Simplify right side
    1,768.36x = 4,545,389.71
  5. Step 5: Solve for x
    x = 4,545,389.71/1,768.36
  6. Step 6: Final answer
    x = 2,570.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.