Home / 1,030.17-1,421.10-883.17

Finding the Fourth Proportional to 1,030.17, 1,421.10 and 883.17

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Solution

The fourth proportional to 1,030.17, 1,421.10 and 883.17 is: 1,218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.17 : 1,421.10 = 883.17 : x
  2. Step 2: Convert to fraction form
    1,030.17/1,421.10 = 883.17/x
  3. Step 3: Cross multiply
    1,030.17x = 1,421.10 × 883.17
  4. Step 4: Simplify right side
    1,030.17x = 1,255,072.89
  5. Step 5: Solve for x
    x = 1,255,072.89/1,030.17
  6. Step 6: Final answer
    x = 1,218.32

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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.