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Finding the Fourth Proportional to 1,393.55, 2,098.47 and 1,030.89

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Solution

The fourth proportional to 1,393.55, 2,098.47 and 1,030.89 is: 1,552.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393.55 : 2,098.47 = 1,030.89 : x
  2. Step 2: Convert to fraction form
    1,393.55/2,098.47 = 1,030.89/x
  3. Step 3: Cross multiply
    1,393.55x = 2,098.47 × 1,030.89
  4. Step 4: Simplify right side
    1,393.55x = 2,163,291.74
  5. Step 5: Solve for x
    x = 2,163,291.74/1,393.55
  6. Step 6: Final answer
    x = 1,552.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.