Home / 1,571.51-2,356.44-646.89

Finding the Fourth Proportional to 1,571.51, 2,356.44 and 646.89

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Solution

The fourth proportional to 1,571.51, 2,356.44 and 646.89 is: 970.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.51 : 2,356.44 = 646.89 : x
  2. Step 2: Convert to fraction form
    1,571.51/2,356.44 = 646.89/x
  3. Step 3: Cross multiply
    1,571.51x = 2,356.44 × 646.89
  4. Step 4: Simplify right side
    1,571.51x = 1,524,357.47
  5. Step 5: Solve for x
    x = 1,524,357.47/1,571.51
  6. Step 6: Final answer
    x = 970.00

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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.