Home / 1,570.52-2,356.45-921.26

Finding the Fourth Proportional to 1,570.52, 2,356.45 and 921.26

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Solution

The fourth proportional to 1,570.52, 2,356.45 and 921.26 is: 1,382.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570.52 : 2,356.45 = 921.26 : x
  2. Step 2: Convert to fraction form
    1,570.52/2,356.45 = 921.26/x
  3. Step 3: Cross multiply
    1,570.52x = 2,356.45 × 921.26
  4. Step 4: Simplify right side
    1,570.52x = 2,170,903.13
  5. Step 5: Solve for x
    x = 2,170,903.13/1,570.52
  6. Step 6: Final answer
    x = 1,382.28

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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.