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Finding the Fourth Proportional to 1,782.03, 2,459.10 and 1,356.02

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Solution

The fourth proportional to 1,782.03, 2,459.10 and 1,356.02 is: 1,871.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,782.03 : 2,459.10 = 1,356.02 : x
  2. Step 2: Convert to fraction form
    1,782.03/2,459.10 = 1,356.02/x
  3. Step 3: Cross multiply
    1,782.03x = 2,459.10 × 1,356.02
  4. Step 4: Simplify right side
    1,782.03x = 3,334,580.62
  5. Step 5: Solve for x
    x = 3,334,580.62/1,782.03
  6. Step 6: Final answer
    x = 1,871.23

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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.