Home / 9,402.48-12,969.72-6,215.76

Finding the Fourth Proportional to 9,402.48, 12,969.72 and 6,215.76

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Solution

The fourth proportional to 9,402.48, 12,969.72 and 6,215.76 is: 8,573.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,402.48 : 12,969.72 = 6,215.76 : x
  2. Step 2: Convert to fraction form
    9,402.48/12,969.72 = 6,215.76/x
  3. Step 3: Cross multiply
    9,402.48x = 12,969.72 × 6,215.76
  4. Step 4: Simplify right side
    9,402.48x = 80,616,666.79
  5. Step 5: Solve for x
    x = 80,616,666.79/9,402.48
  6. Step 6: Final answer
    x = 8,573.98

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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.