Home / 6,445.60-8,898.24-4,210.72

Finding the Fourth Proportional to 6,445.60, 8,898.24 and 4,210.72

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Solution

The fourth proportional to 6,445.60, 8,898.24 and 4,210.72 is: 5,812.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,445.60 : 8,898.24 = 4,210.72 : x
  2. Step 2: Convert to fraction form
    6,445.60/8,898.24 = 4,210.72/x
  3. Step 3: Cross multiply
    6,445.60x = 8,898.24 × 4,210.72
  4. Step 4: Simplify right side
    6,445.60x = 37,467,997.13
  5. Step 5: Solve for x
    x = 37,467,997.13/6,445.60
  6. Step 6: Final answer
    x = 5,812.96

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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.