Home / 2,538.40-3,802.92-2,130.16

Finding the Fourth Proportional to 2,538.40, 3,802.92 and 2,130.16

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Solution

The fourth proportional to 2,538.40, 3,802.92 and 2,130.16 is: 3,191.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,538.40 : 3,802.92 = 2,130.16 : x
  2. Step 2: Convert to fraction form
    2,538.40/3,802.92 = 2,130.16/x
  3. Step 3: Cross multiply
    2,538.40x = 3,802.92 × 2,130.16
  4. Step 4: Simplify right side
    2,538.40x = 8,100,828.07
  5. Step 5: Solve for x
    x = 8,100,828.07/2,538.40
  6. Step 6: Final answer
    x = 3,191.31

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1.5x scale

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.