Home / 1,567.31-2,162.19-1,007.67

Finding the Fourth Proportional to 1,567.31, 2,162.19 and 1,007.67

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Solution

The fourth proportional to 1,567.31, 2,162.19 and 1,007.67 is: 1,390.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,567.31 : 2,162.19 = 1,007.67 : x
  2. Step 2: Convert to fraction form
    1,567.31/2,162.19 = 1,007.67/x
  3. Step 3: Cross multiply
    1,567.31x = 2,162.19 × 1,007.67
  4. Step 4: Simplify right side
    1,567.31x = 2,178,768.96
  5. Step 5: Solve for x
    x = 2,178,768.96/1,567.31
  6. Step 6: Final answer
    x = 1,390.14

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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.