Home / 7,012.40-9,677.28-4,029.80

Finding the Fourth Proportional to 7,012.40, 9,677.28 and 4,029.80

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Solution

The fourth proportional to 7,012.40, 9,677.28 and 4,029.80 is: 5,561.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,012.40 : 9,677.28 = 4,029.80 : x
  2. Step 2: Convert to fraction form
    7,012.40/9,677.28 = 4,029.80/x
  3. Step 3: Cross multiply
    7,012.40x = 9,677.28 × 4,029.80
  4. Step 4: Simplify right side
    7,012.40x = 38,997,502.94
  5. Step 5: Solve for x
    x = 38,997,502.94/7,012.40
  6. Step 6: Final answer
    x = 5,561.22

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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.