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Finding the Fourth Proportional to 2,459.07, 3,390.97 and 1,899.63

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Solution

The fourth proportional to 2,459.07, 3,390.97 and 1,899.63 is: 2,619.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,459.07 : 3,390.97 = 1,899.63 : x
  2. Step 2: Convert to fraction form
    2,459.07/3,390.97 = 1,899.63/x
  3. Step 3: Cross multiply
    2,459.07x = 3,390.97 × 1,899.63
  4. Step 4: Simplify right side
    2,459.07x = 6,441,588.34
  5. Step 5: Solve for x
    x = 6,441,588.34/2,459.07
  6. Step 6: Final answer
    x = 2,619.52

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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.