Home / 7,135.90-10,703.65-3,240.30

Finding the Fourth Proportional to 7,135.90, 10,703.65 and 3,240.30

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Solution

The fourth proportional to 7,135.90, 10,703.65 and 3,240.30 is: 4,860.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.90 : 10,703.65 = 3,240.30 : x
  2. Step 2: Convert to fraction form
    7,135.90/10,703.65 = 3,240.30/x
  3. Step 3: Cross multiply
    7,135.90x = 10,703.65 × 3,240.30
  4. Step 4: Simplify right side
    7,135.90x = 34,683,037.10
  5. Step 5: Solve for x
    x = 34,683,037.10/7,135.90
  6. Step 6: Final answer
    x = 4,860.36

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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.