Home / 4,611.80-6,920.40-1,690.31

Finding the Fourth Proportional to 4,611.80, 6,920.40 and 1,690.31

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Solution

The fourth proportional to 4,611.80, 6,920.40 and 1,690.31 is: 2,536.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,611.80 : 6,920.40 = 1,690.31 : x
  2. Step 2: Convert to fraction form
    4,611.80/6,920.40 = 1,690.31/x
  3. Step 3: Cross multiply
    4,611.80x = 6,920.40 × 1,690.31
  4. Step 4: Simplify right side
    4,611.80x = 11,697,586.72
  5. Step 5: Solve for x
    x = 11,697,586.72/4,611.80
  6. Step 6: Final answer
    x = 2,536.45

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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.