Home / 1,478.90-2,214.06-1,039.58

Finding the Fourth Proportional to 1,478.90, 2,214.06 and 1,039.58

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Solution

The fourth proportional to 1,478.90, 2,214.06 and 1,039.58 is: 1,556.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.90 : 2,214.06 = 1,039.58 : x
  2. Step 2: Convert to fraction form
    1,478.90/2,214.06 = 1,039.58/x
  3. Step 3: Cross multiply
    1,478.90x = 2,214.06 × 1,039.58
  4. Step 4: Simplify right side
    1,478.90x = 2,301,692.49
  5. Step 5: Solve for x
    x = 2,301,692.49/1,478.90
  6. Step 6: Final answer
    x = 1,556.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.