Home / 1,431.47-1,975.37-801.98

Finding the Fourth Proportional to 1,431.47, 1,975.37 and 801.98

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Solution

The fourth proportional to 1,431.47, 1,975.37 and 801.98 is: 1,106.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.47 : 1,975.37 = 801.98 : x
  2. Step 2: Convert to fraction form
    1,431.47/1,975.37 = 801.98/x
  3. Step 3: Cross multiply
    1,431.47x = 1,975.37 × 801.98
  4. Step 4: Simplify right side
    1,431.47x = 1,584,199.36
  5. Step 5: Solve for x
    x = 1,584,199.36/1,431.47
  6. Step 6: Final answer
    x = 1,106.70

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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.