Home / 8,971.20-13,445.60-4,590.40

Finding the Fourth Proportional to 8,971.20, 13,445.60 and 4,590.40

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Solution

The fourth proportional to 8,971.20, 13,445.60 and 4,590.40 is: 6,879.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971.20 : 13,445.60 = 4,590.40 : x
  2. Step 2: Convert to fraction form
    8,971.20/13,445.60 = 4,590.40/x
  3. Step 3: Cross multiply
    8,971.20x = 13,445.60 × 4,590.40
  4. Step 4: Simplify right side
    8,971.20x = 61,720,682.24
  5. Step 5: Solve for x
    x = 61,720,682.24/8,971.20
  6. Step 6: Final answer
    x = 6,879.87

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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.