Home / 1,572.82-2,170.90-1,075.28

Finding the Fourth Proportional to 1,572.82, 2,170.90 and 1,075.28

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Solution

The fourth proportional to 1,572.82, 2,170.90 and 1,075.28 is: 1,484.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.82 : 2,170.90 = 1,075.28 : x
  2. Step 2: Convert to fraction form
    1,572.82/2,170.90 = 1,075.28/x
  3. Step 3: Cross multiply
    1,572.82x = 2,170.90 × 1,075.28
  4. Step 4: Simplify right side
    1,572.82x = 2,334,315.84
  5. Step 5: Solve for x
    x = 2,334,315.84/1,572.82
  6. Step 6: Final answer
    x = 1,484.16

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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.