Home / 3,012.81-4,157.65-1,686.53

Finding the Fourth Proportional to 3,012.81, 4,157.65 and 1,686.53

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Solution

The fourth proportional to 3,012.81, 4,157.65 and 1,686.53 is: 2,327.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.81 : 4,157.65 = 1,686.53 : x
  2. Step 2: Convert to fraction form
    3,012.81/4,157.65 = 1,686.53/x
  3. Step 3: Cross multiply
    3,012.81x = 4,157.65 × 1,686.53
  4. Step 4: Simplify right side
    3,012.81x = 7,011,998.37
  5. Step 5: Solve for x
    x = 7,011,998.37/3,012.81
  6. Step 6: Final answer
    x = 2,327.39

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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.