Home / 7,039.72-9,708.90-6,106.60

Finding the Fourth Proportional to 7,039.72, 9,708.90 and 6,106.60

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Solution

The fourth proportional to 7,039.72, 9,708.90 and 6,106.60 is: 8,421.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.72 : 9,708.90 = 6,106.60 : x
  2. Step 2: Convert to fraction form
    7,039.72/9,708.90 = 6,106.60/x
  3. Step 3: Cross multiply
    7,039.72x = 9,708.90 × 6,106.60
  4. Step 4: Simplify right side
    7,039.72x = 59,288,368.74
  5. Step 5: Solve for x
    x = 59,288,368.74/7,039.72
  6. Step 6: Final answer
    x = 8,421.98

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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.