Home / 9,210.66-12,703.64-6,221.76

Finding the Fourth Proportional to 9,210.66, 12,703.64 and 6,221.76

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Solution

The fourth proportional to 9,210.66, 12,703.64 and 6,221.76 is: 8,581.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,210.66 : 12,703.64 = 6,221.76 : x
  2. Step 2: Convert to fraction form
    9,210.66/12,703.64 = 6,221.76/x
  3. Step 3: Cross multiply
    9,210.66x = 12,703.64 × 6,221.76
  4. Step 4: Simplify right side
    9,210.66x = 79,038,999.21
  5. Step 5: Solve for x
    x = 79,038,999.21/9,210.66
  6. Step 6: Final answer
    x = 8,581.25

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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.