Home / 7,130.60-10,710.30-6,885.80

Finding the Fourth Proportional to 7,130.60, 10,710.30 and 6,885.80

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Solution

The fourth proportional to 7,130.60, 10,710.30 and 6,885.80 is: 10,342.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.60 : 10,710.30 = 6,885.80 : x
  2. Step 2: Convert to fraction form
    7,130.60/10,710.30 = 6,885.80/x
  3. Step 3: Cross multiply
    7,130.60x = 10,710.30 × 6,885.80
  4. Step 4: Simplify right side
    7,130.60x = 73,748,983.74
  5. Step 5: Solve for x
    x = 73,748,983.74/7,130.60
  6. Step 6: Final answer
    x = 10,342.61

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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.