Home / 8,585.28-12,878.50-2,742.32

Finding the Fourth Proportional to 8,585.28, 12,878.50 and 2,742.32

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Solution

The fourth proportional to 8,585.28, 12,878.50 and 2,742.32 is: 4,113.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,585.28 : 12,878.50 = 2,742.32 : x
  2. Step 2: Convert to fraction form
    8,585.28/12,878.50 = 2,742.32/x
  3. Step 3: Cross multiply
    8,585.28x = 12,878.50 × 2,742.32
  4. Step 4: Simplify right side
    8,585.28x = 35,316,968.12
  5. Step 5: Solve for x
    x = 35,316,968.12/8,585.28
  6. Step 6: Final answer
    x = 4,113.67

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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.