Home / 4,971.57-6,861.68-2,875.70

Finding the Fourth Proportional to 4,971.57, 6,861.68 and 2,875.70

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Solution

The fourth proportional to 4,971.57, 6,861.68 and 2,875.70 is: 3,968.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,971.57 : 6,861.68 = 2,875.70 : x
  2. Step 2: Convert to fraction form
    4,971.57/6,861.68 = 2,875.70/x
  3. Step 3: Cross multiply
    4,971.57x = 6,861.68 × 2,875.70
  4. Step 4: Simplify right side
    4,971.57x = 19,732,084.49
  5. Step 5: Solve for x
    x = 19,732,084.49/4,971.57
  6. Step 6: Final answer
    x = 3,968.98

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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.