Home / 1,460.09-2,190.51-486.20

Finding the Fourth Proportional to 1,460.09, 2,190.51 and 486.20

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Solution

The fourth proportional to 1,460.09, 2,190.51 and 486.20 is: 729.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.09 : 2,190.51 = 486.20 : x
  2. Step 2: Convert to fraction form
    1,460.09/2,190.51 = 486.20/x
  3. Step 3: Cross multiply
    1,460.09x = 2,190.51 × 486.20
  4. Step 4: Simplify right side
    1,460.09x = 1,065,013.79
  5. Step 5: Solve for x
    x = 1,065,013.79/1,460.09
  6. Step 6: Final answer
    x = 729.42

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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.