Home / 2,370.19-3,555.28-638.81

Finding the Fourth Proportional to 2,370.19, 3,555.28 and 638.81

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Solution

The fourth proportional to 2,370.19, 3,555.28 and 638.81 is: 958.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,370.19 : 3,555.28 = 638.81 : x
  2. Step 2: Convert to fraction form
    2,370.19/3,555.28 = 638.81/x
  3. Step 3: Cross multiply
    2,370.19x = 3,555.28 × 638.81
  4. Step 4: Simplify right side
    2,370.19x = 2,271,158.10
  5. Step 5: Solve for x
    x = 2,271,158.10/2,370.19
  6. Step 6: Final answer
    x = 958.22

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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.