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Finding the Fourth Proportional to 1,571.64, 2,169.72 and 1,075.02

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Solution

The fourth proportional to 1,571.64, 2,169.72 and 1,075.02 is: 1,484.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.64 : 2,169.72 = 1,075.02 : x
  2. Step 2: Convert to fraction form
    1,571.64/2,169.72 = 1,075.02/x
  3. Step 3: Cross multiply
    1,571.64x = 2,169.72 × 1,075.02
  4. Step 4: Simplify right side
    1,571.64x = 2,332,492.39
  5. Step 5: Solve for x
    x = 2,332,492.39/1,571.64
  6. Step 6: Final answer
    x = 1,484.11

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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.