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Finding the Fourth Proportional to 1,762.94, 2,643.87 and 1,415.45

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Solution

The fourth proportional to 1,762.94, 2,643.87 and 1,415.45 is: 2,122.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762.94 : 2,643.87 = 1,415.45 : x
  2. Step 2: Convert to fraction form
    1,762.94/2,643.87 = 1,415.45/x
  3. Step 3: Cross multiply
    1,762.94x = 2,643.87 × 1,415.45
  4. Step 4: Simplify right side
    1,762.94x = 3,742,265.79
  5. Step 5: Solve for x
    x = 3,742,265.79/1,762.94
  6. Step 6: Final answer
    x = 2,122.74

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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.