Home / 1,647.07-2,471.18-722.51

Finding the Fourth Proportional to 1,647.07, 2,471.18 and 722.51

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Solution

The fourth proportional to 1,647.07, 2,471.18 and 722.51 is: 1,084.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.07 : 2,471.18 = 722.51 : x
  2. Step 2: Convert to fraction form
    1,647.07/2,471.18 = 722.51/x
  3. Step 3: Cross multiply
    1,647.07x = 2,471.18 × 722.51
  4. Step 4: Simplify right side
    1,647.07x = 1,785,447.04
  5. Step 5: Solve for x
    x = 1,785,447.04/1,647.07
  6. Step 6: Final answer
    x = 1,084.01

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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.