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Finding the Fourth Proportional to 1,859.63, 2,784.32 and 1,242.49

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Solution

The fourth proportional to 1,859.63, 2,784.32 and 1,242.49 is: 1,860.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,859.63 : 2,784.32 = 1,242.49 : x
  2. Step 2: Convert to fraction form
    1,859.63/2,784.32 = 1,242.49/x
  3. Step 3: Cross multiply
    1,859.63x = 2,784.32 × 1,242.49
  4. Step 4: Simplify right side
    1,859.63x = 3,459,493.45
  5. Step 5: Solve for x
    x = 3,459,493.45/1,859.63
  6. Step 6: Final answer
    x = 1,860.31

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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.