Home / 1,440.36-1,988.10-975.96

Finding the Fourth Proportional to 1,440.36, 1,988.10 and 975.96

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Solution

The fourth proportional to 1,440.36, 1,988.10 and 975.96 is: 1,347.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.36 : 1,988.10 = 975.96 : x
  2. Step 2: Convert to fraction form
    1,440.36/1,988.10 = 975.96/x
  3. Step 3: Cross multiply
    1,440.36x = 1,988.10 × 975.96
  4. Step 4: Simplify right side
    1,440.36x = 1,940,306.08
  5. Step 5: Solve for x
    x = 1,940,306.08/1,440.36
  6. Step 6: Final answer
    x = 1,347.10

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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.