Home / 2,719.31-4,075.88-1,621.40

Finding the Fourth Proportional to 2,719.31, 4,075.88 and 1,621.40

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Solution

The fourth proportional to 2,719.31, 4,075.88 and 1,621.40 is: 2,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.31 : 4,075.88 = 1,621.40 : x
  2. Step 2: Convert to fraction form
    2,719.31/4,075.88 = 1,621.40/x
  3. Step 3: Cross multiply
    2,719.31x = 4,075.88 × 1,621.40
  4. Step 4: Simplify right side
    2,719.31x = 6,608,603.35
  5. Step 5: Solve for x
    x = 6,608,603.35/2,719.31
  6. Step 6: Final answer
    x = 2,430.25

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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.