Home / 7,742.40-11,613.52-3,124.32

Finding the Fourth Proportional to 7,742.40, 11,613.52 and 3,124.32

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Solution

The fourth proportional to 7,742.40, 11,613.52 and 3,124.32 is: 4,686.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.40 : 11,613.52 = 3,124.32 : x
  2. Step 2: Convert to fraction form
    7,742.40/11,613.52 = 3,124.32/x
  3. Step 3: Cross multiply
    7,742.40x = 11,613.52 × 3,124.32
  4. Step 4: Simplify right side
    7,742.40x = 36,284,352.81
  5. Step 5: Solve for x
    x = 36,284,352.81/7,742.40
  6. Step 6: Final answer
    x = 4,686.45

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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.