Home / 8,386.79-12,581.69-6,840.50

Finding the Fourth Proportional to 8,386.79, 12,581.69 and 6,840.50

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Solution

The fourth proportional to 8,386.79, 12,581.69 and 6,840.50 is: 10,261.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.79 : 12,581.69 = 6,840.50 : x
  2. Step 2: Convert to fraction form
    8,386.79/12,581.69 = 6,840.50/x
  3. Step 3: Cross multiply
    8,386.79x = 12,581.69 × 6,840.50
  4. Step 4: Simplify right side
    8,386.79x = 86,064,953.33
  5. Step 5: Solve for x
    x = 86,064,953.33/8,386.79
  6. Step 6: Final answer
    x = 10,261.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.