Home / 9,113.36-12,557.69-6,988.79

Finding the Fourth Proportional to 9,113.36, 12,557.69 and 6,988.79

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Solution

The fourth proportional to 9,113.36, 12,557.69 and 6,988.79 is: 9,630.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,113.36 : 12,557.69 = 6,988.79 : x
  2. Step 2: Convert to fraction form
    9,113.36/12,557.69 = 6,988.79/x
  3. Step 3: Cross multiply
    9,113.36x = 12,557.69 × 6,988.79
  4. Step 4: Simplify right side
    9,113.36x = 87,763,054.75
  5. Step 5: Solve for x
    x = 87,763,054.75/9,113.36
  6. Step 6: Final answer
    x = 9,630.16

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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.