Home / 2,075.66-3,113.98-921.50

Finding the Fourth Proportional to 2,075.66, 3,113.98 and 921.50

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Solution

The fourth proportional to 2,075.66, 3,113.98 and 921.50 is: 1,382.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,075.66 : 3,113.98 = 921.50 : x
  2. Step 2: Convert to fraction form
    2,075.66/3,113.98 = 921.50/x
  3. Step 3: Cross multiply
    2,075.66x = 3,113.98 × 921.50
  4. Step 4: Simplify right side
    2,075.66x = 2,869,532.57
  5. Step 5: Solve for x
    x = 2,869,532.57/2,075.66
  6. Step 6: Final answer
    x = 1,382.47

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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.