Home / 6,465.60-8,920.80-3,671.04

Finding the Fourth Proportional to 6,465.60, 8,920.80 and 3,671.04

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Solution

The fourth proportional to 6,465.60, 8,920.80 and 3,671.04 is: 5,065.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,465.60 : 8,920.80 = 3,671.04 : x
  2. Step 2: Convert to fraction form
    6,465.60/8,920.80 = 3,671.04/x
  3. Step 3: Cross multiply
    6,465.60x = 8,920.80 × 3,671.04
  4. Step 4: Simplify right side
    6,465.60x = 32,748,613.63
  5. Step 5: Solve for x
    x = 32,748,613.63/6,465.60
  6. Step 6: Final answer
    x = 5,065.05

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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.