Home / 4,685.31-7,031.30-1,764.45

Finding the Fourth Proportional to 4,685.31, 7,031.30 and 1,764.45

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Solution

The fourth proportional to 4,685.31, 7,031.30 and 1,764.45 is: 2,647.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,685.31 : 7,031.30 = 1,764.45 : x
  2. Step 2: Convert to fraction form
    4,685.31/7,031.30 = 1,764.45/x
  3. Step 3: Cross multiply
    4,685.31x = 7,031.30 × 1,764.45
  4. Step 4: Simplify right side
    4,685.31x = 12,406,368.46
  5. Step 5: Solve for x
    x = 12,406,368.46/4,685.31
  6. Step 6: Final answer
    x = 2,647.93

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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.