Home / 2,460.13-3,690.73-921.13

Finding the Fourth Proportional to 2,460.13, 3,690.73 and 921.13

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Solution

The fourth proportional to 2,460.13, 3,690.73 and 921.13 is: 1,381.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,460.13 : 3,690.73 = 921.13 : x
  2. Step 2: Convert to fraction form
    2,460.13/3,690.73 = 921.13/x
  3. Step 3: Cross multiply
    2,460.13x = 3,690.73 × 921.13
  4. Step 4: Simplify right side
    2,460.13x = 3,399,642.12
  5. Step 5: Solve for x
    x = 3,399,642.12/2,460.13
  6. Step 6: Final answer
    x = 1,381.90

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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.