Home / 1,867.90-2,801.85-1,666.30

Finding the Fourth Proportional to 1,867.90, 2,801.85 and 1,666.30

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Solution

The fourth proportional to 1,867.90, 2,801.85 and 1,666.30 is: 2,499.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.90 : 2,801.85 = 1,666.30 : x
  2. Step 2: Convert to fraction form
    1,867.90/2,801.85 = 1,666.30/x
  3. Step 3: Cross multiply
    1,867.90x = 2,801.85 × 1,666.30
  4. Step 4: Simplify right side
    1,867.90x = 4,668,722.66
  5. Step 5: Solve for x
    x = 4,668,722.66/1,867.90
  6. Step 6: Final answer
    x = 2,499.45

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1.5x scale

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.