Home / 1,571.50-2,167.18-1,145.74

Finding the Fourth Proportional to 1,571.50, 2,167.18 and 1,145.74

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Solution

The fourth proportional to 1,571.50, 2,167.18 and 1,145.74 is: 1,580.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.50 : 2,167.18 = 1,145.74 : x
  2. Step 2: Convert to fraction form
    1,571.50/2,167.18 = 1,145.74/x
  3. Step 3: Cross multiply
    1,571.50x = 2,167.18 × 1,145.74
  4. Step 4: Simplify right side
    1,571.50x = 2,483,024.81
  5. Step 5: Solve for x
    x = 2,483,024.81/1,571.50
  6. Step 6: Final answer
    x = 1,580.03

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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.