Home / 3,075.28-4,612.35-1,320.60

Finding the Fourth Proportional to 3,075.28, 4,612.35 and 1,320.60

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Solution

The fourth proportional to 3,075.28, 4,612.35 and 1,320.60 is: 1,980.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,075.28 : 4,612.35 = 1,320.60 : x
  2. Step 2: Convert to fraction form
    3,075.28/4,612.35 = 1,320.60/x
  3. Step 3: Cross multiply
    3,075.28x = 4,612.35 × 1,320.60
  4. Step 4: Simplify right side
    3,075.28x = 6,091,069.41
  5. Step 5: Solve for x
    x = 6,091,069.41/3,075.28
  6. Step 6: Final answer
    x = 1,980.66

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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.