Home / 2,621.65-3,617.58-1,442.65

Finding the Fourth Proportional to 2,621.65, 3,617.58 and 1,442.65

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Solution

The fourth proportional to 2,621.65, 3,617.58 and 1,442.65 is: 1,990.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.65 : 3,617.58 = 1,442.65 : x
  2. Step 2: Convert to fraction form
    2,621.65/3,617.58 = 1,442.65/x
  3. Step 3: Cross multiply
    2,621.65x = 3,617.58 × 1,442.65
  4. Step 4: Simplify right side
    2,621.65x = 5,218,901.79
  5. Step 5: Solve for x
    x = 5,218,901.79/2,621.65
  6. Step 6: Final answer
    x = 1,990.69

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1.5x scale

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.