Home / 4,878.07-7,318.18-1,916.80

Finding the Fourth Proportional to 4,878.07, 7,318.18 and 1,916.80

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Solution

The fourth proportional to 4,878.07, 7,318.18 and 1,916.80 is: 2,875.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.07 : 7,318.18 = 1,916.80 : x
  2. Step 2: Convert to fraction form
    4,878.07/7,318.18 = 1,916.80/x
  3. Step 3: Cross multiply
    4,878.07x = 7,318.18 × 1,916.80
  4. Step 4: Simplify right side
    4,878.07x = 14,027,487.42
  5. Step 5: Solve for x
    x = 14,027,487.42/4,878.07
  6. Step 6: Final answer
    x = 2,875.62

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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.