Home / 1,571.16-2,166.99-1,151.36

Finding the Fourth Proportional to 1,571.16, 2,166.99 and 1,151.36

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Solution

The fourth proportional to 1,571.16, 2,166.99 and 1,151.36 is: 1,587.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.16 : 2,166.99 = 1,151.36 : x
  2. Step 2: Convert to fraction form
    1,571.16/2,166.99 = 1,151.36/x
  3. Step 3: Cross multiply
    1,571.16x = 2,166.99 × 1,151.36
  4. Step 4: Simplify right side
    1,571.16x = 2,494,970.45
  5. Step 5: Solve for x
    x = 2,494,970.45/1,571.16
  6. Step 6: Final answer
    x = 1,587.98

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1.5x scale

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.