Home / 2,521.91-3,479.87-1,402.65

Finding the Fourth Proportional to 2,521.91, 3,479.87 and 1,402.65

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Solution

The fourth proportional to 2,521.91, 3,479.87 and 1,402.65 is: 1,935.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521.91 : 3,479.87 = 1,402.65 : x
  2. Step 2: Convert to fraction form
    2,521.91/3,479.87 = 1,402.65/x
  3. Step 3: Cross multiply
    2,521.91x = 3,479.87 × 1,402.65
  4. Step 4: Simplify right side
    2,521.91x = 4,881,043.16
  5. Step 5: Solve for x
    x = 4,881,043.16/2,521.91
  6. Step 6: Final answer
    x = 1,935.45

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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.