Home / 1,488.12-2,051.90-1,207.49

Finding the Fourth Proportional to 1,488.12, 2,051.90 and 1,207.49

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Solution

The fourth proportional to 1,488.12, 2,051.90 and 1,207.49 is: 1,664.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.12 : 2,051.90 = 1,207.49 : x
  2. Step 2: Convert to fraction form
    1,488.12/2,051.90 = 1,207.49/x
  3. Step 3: Cross multiply
    1,488.12x = 2,051.90 × 1,207.49
  4. Step 4: Simplify right side
    1,488.12x = 2,477,632.43
  5. Step 5: Solve for x
    x = 2,477,632.43/1,488.12
  6. Step 6: Final answer
    x = 1,664.94

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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.