Home / 7,899.72-10,899.93-4,712.16

Finding the Fourth Proportional to 7,899.72, 10,899.93 and 4,712.16

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Solution

The fourth proportional to 7,899.72, 10,899.93 and 4,712.16 is: 6,501.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.72 : 10,899.93 = 4,712.16 : x
  2. Step 2: Convert to fraction form
    7,899.72/10,899.93 = 4,712.16/x
  3. Step 3: Cross multiply
    7,899.72x = 10,899.93 × 4,712.16
  4. Step 4: Simplify right side
    7,899.72x = 51,362,214.15
  5. Step 5: Solve for x
    x = 51,362,214.15/7,899.72
  6. Step 6: Final answer
    x = 6,501.78

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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.