Home / 8,927.48-12,320.39-5,390.93

Finding the Fourth Proportional to 8,927.48, 12,320.39 and 5,390.93

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Solution

The fourth proportional to 8,927.48, 12,320.39 and 5,390.93 is: 7,439.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,927.48 : 12,320.39 = 5,390.93 : x
  2. Step 2: Convert to fraction form
    8,927.48/12,320.39 = 5,390.93/x
  3. Step 3: Cross multiply
    8,927.48x = 12,320.39 × 5,390.93
  4. Step 4: Simplify right side
    8,927.48x = 66,418,360.06
  5. Step 5: Solve for x
    x = 66,418,360.06/8,927.48
  6. Step 6: Final answer
    x = 7,439.77

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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.