Home / 2,486.88-3,430.90-1,424.07

Finding the Fourth Proportional to 2,486.88, 3,430.90 and 1,424.07

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Solution

The fourth proportional to 2,486.88, 3,430.90 and 1,424.07 is: 1,964.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.88 : 3,430.90 = 1,424.07 : x
  2. Step 2: Convert to fraction form
    2,486.88/3,430.90 = 1,424.07/x
  3. Step 3: Cross multiply
    2,486.88x = 3,430.90 × 1,424.07
  4. Step 4: Simplify right side
    2,486.88x = 4,885,817.49
  5. Step 5: Solve for x
    x = 4,885,817.49/2,486.88
  6. Step 6: Final answer
    x = 1,964.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.