Home / 1,572.90-2,356.50-1,311.26

Finding the Fourth Proportional to 1,572.90, 2,356.50 and 1,311.26

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Solution

The fourth proportional to 1,572.90, 2,356.50 and 1,311.26 is: 1,964.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.90 : 2,356.50 = 1,311.26 : x
  2. Step 2: Convert to fraction form
    1,572.90/2,356.50 = 1,311.26/x
  3. Step 3: Cross multiply
    1,572.90x = 2,356.50 × 1,311.26
  4. Step 4: Simplify right side
    1,572.90x = 3,089,984.19
  5. Step 5: Solve for x
    x = 3,089,984.19/1,572.90
  6. Step 6: Final answer
    x = 1,964.51

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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.