Home / 1,445.01-2,167.80-786.87

Finding the Fourth Proportional to 1,445.01, 2,167.80 and 786.87

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Solution

The fourth proportional to 1,445.01, 2,167.80 and 786.87 is: 1,180.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.01 : 2,167.80 = 786.87 : x
  2. Step 2: Convert to fraction form
    1,445.01/2,167.80 = 786.87/x
  3. Step 3: Cross multiply
    1,445.01x = 2,167.80 × 786.87
  4. Step 4: Simplify right side
    1,445.01x = 1,705,776.79
  5. Step 5: Solve for x
    x = 1,705,776.79/1,445.01
  6. Step 6: Final answer
    x = 1,180.46

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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.