Home / 1,571.16-2,356.90-646.79

Finding the Fourth Proportional to 1,571.16, 2,356.90 and 646.79

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Solution

The fourth proportional to 1,571.16, 2,356.90 and 646.79 is: 970.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.16 : 2,356.90 = 646.79 : x
  2. Step 2: Convert to fraction form
    1,571.16/2,356.90 = 646.79/x
  3. Step 3: Cross multiply
    1,571.16x = 2,356.90 × 646.79
  4. Step 4: Simplify right side
    1,571.16x = 1,524,405.95
  5. Step 5: Solve for x
    x = 1,524,405.95/1,571.16
  6. Step 6: Final answer
    x = 970.24

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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.