Home / 1,564.97-2,159.72-975.20

Finding the Fourth Proportional to 1,564.97, 2,159.72 and 975.20

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Solution

The fourth proportional to 1,564.97, 2,159.72 and 975.20 is: 1,345.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,564.97 : 2,159.72 = 975.20 : x
  2. Step 2: Convert to fraction form
    1,564.97/2,159.72 = 975.20/x
  3. Step 3: Cross multiply
    1,564.97x = 2,159.72 × 975.20
  4. Step 4: Simplify right side
    1,564.97x = 2,106,143.27
  5. Step 5: Solve for x
    x = 2,106,143.27/1,564.97
  6. Step 6: Final answer
    x = 1,345.81

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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.