Home / 5,815.10-8,722.58-1,432.60

Finding the Fourth Proportional to 5,815.10, 8,722.58 and 1,432.60

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Solution

The fourth proportional to 5,815.10, 8,722.58 and 1,432.60 is: 2,148.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.10 : 8,722.58 = 1,432.60 : x
  2. Step 2: Convert to fraction form
    5,815.10/8,722.58 = 1,432.60/x
  3. Step 3: Cross multiply
    5,815.10x = 8,722.58 × 1,432.60
  4. Step 4: Simplify right side
    5,815.10x = 12,495,968.11
  5. Step 5: Solve for x
    x = 12,495,968.11/5,815.10
  6. Step 6: Final answer
    x = 2,148.88

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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.