Home / 1,583.81-2,187.47-1,290.59

Finding the Fourth Proportional to 1,583.81, 2,187.47 and 1,290.59

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Solution

The fourth proportional to 1,583.81, 2,187.47 and 1,290.59 is: 1,782.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,583.81 : 2,187.47 = 1,290.59 : x
  2. Step 2: Convert to fraction form
    1,583.81/2,187.47 = 1,290.59/x
  3. Step 3: Cross multiply
    1,583.81x = 2,187.47 × 1,290.59
  4. Step 4: Simplify right side
    1,583.81x = 2,823,126.91
  5. Step 5: Solve for x
    x = 2,823,126.91/1,583.81
  6. Step 6: Final answer
    x = 1,782.49

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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.