Home / 1,582.90-2,187.34-1,212.48

Finding the Fourth Proportional to 1,582.90, 2,187.34 and 1,212.48

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Solution

The fourth proportional to 1,582.90, 2,187.34 and 1,212.48 is: 1,675.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,582.90 : 2,187.34 = 1,212.48 : x
  2. Step 2: Convert to fraction form
    1,582.90/2,187.34 = 1,212.48/x
  3. Step 3: Cross multiply
    1,582.90x = 2,187.34 × 1,212.48
  4. Step 4: Simplify right side
    1,582.90x = 2,652,097.32
  5. Step 5: Solve for x
    x = 2,652,097.32/1,582.90
  6. Step 6: Final answer
    x = 1,675.47

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1.5x scale

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.