Home / 1,451.93-2,176.80-722.02

Finding the Fourth Proportional to 1,451.93, 2,176.80 and 722.02

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Solution

The fourth proportional to 1,451.93, 2,176.80 and 722.02 is: 1,082.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.93 : 2,176.80 = 722.02 : x
  2. Step 2: Convert to fraction form
    1,451.93/2,176.80 = 722.02/x
  3. Step 3: Cross multiply
    1,451.93x = 2,176.80 × 722.02
  4. Step 4: Simplify right side
    1,451.93x = 1,571,697.22
  5. Step 5: Solve for x
    x = 1,571,697.22/1,451.93
  6. Step 6: Final answer
    x = 1,082.49

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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.