Home / 1,572.71-2,170.44-1,040.67

Finding the Fourth Proportional to 1,572.71, 2,170.44 and 1,040.67

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Solution

The fourth proportional to 1,572.71, 2,170.44 and 1,040.67 is: 1,436.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.71 : 2,170.44 = 1,040.67 : x
  2. Step 2: Convert to fraction form
    1,572.71/2,170.44 = 1,040.67/x
  3. Step 3: Cross multiply
    1,572.71x = 2,170.44 × 1,040.67
  4. Step 4: Simplify right side
    1,572.71x = 2,258,711.79
  5. Step 5: Solve for x
    x = 2,258,711.79/1,572.71
  6. Step 6: Final answer
    x = 1,436.20

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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.