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Finding the Fourth Proportional to 8,953.99, 12,356.56 and 4,920.77

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Solution

The fourth proportional to 8,953.99, 12,356.56 and 4,920.77 is: 6,790.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,953.99 : 12,356.56 = 4,920.77 : x
  2. Step 2: Convert to fraction form
    8,953.99/12,356.56 = 4,920.77/x
  3. Step 3: Cross multiply
    8,953.99x = 12,356.56 × 4,920.77
  4. Step 4: Simplify right side
    8,953.99x = 60,803,808.34
  5. Step 5: Solve for x
    x = 60,803,808.34/8,953.99
  6. Step 6: Final answer
    x = 6,790.70

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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.