Home / 1,985.03-2,738.78-1,564.07

Finding the Fourth Proportional to 1,985.03, 2,738.78 and 1,564.07

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Solution

The fourth proportional to 1,985.03, 2,738.78 and 1,564.07 is: 2,157.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.03 : 2,738.78 = 1,564.07 : x
  2. Step 2: Convert to fraction form
    1,985.03/2,738.78 = 1,564.07/x
  3. Step 3: Cross multiply
    1,985.03x = 2,738.78 × 1,564.07
  4. Step 4: Simplify right side
    1,985.03x = 4,283,635.81
  5. Step 5: Solve for x
    x = 4,283,635.81/1,985.03
  6. Step 6: Final answer
    x = 2,157.98

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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.