Home / 2,981.40-4,464.48-1,681.68

Finding the Fourth Proportional to 2,981.40, 4,464.48 and 1,681.68

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Solution

The fourth proportional to 2,981.40, 4,464.48 and 1,681.68 is: 2,518.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.40 : 4,464.48 = 1,681.68 : x
  2. Step 2: Convert to fraction form
    2,981.40/4,464.48 = 1,681.68/x
  3. Step 3: Cross multiply
    2,981.40x = 4,464.48 × 1,681.68
  4. Step 4: Simplify right side
    2,981.40x = 7,507,826.73
  5. Step 5: Solve for x
    x = 7,507,826.73/2,981.40
  6. Step 6: Final answer
    x = 2,518.22

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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.