Home / 6,980.18-9,630.47-3,995.45

Finding the Fourth Proportional to 6,980.18, 9,630.47 and 3,995.45

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Solution

The fourth proportional to 6,980.18, 9,630.47 and 3,995.45 is: 5,512.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,980.18 : 9,630.47 = 3,995.45 : x
  2. Step 2: Convert to fraction form
    6,980.18/9,630.47 = 3,995.45/x
  3. Step 3: Cross multiply
    6,980.18x = 9,630.47 × 3,995.45
  4. Step 4: Simplify right side
    6,980.18x = 38,478,075.16
  5. Step 5: Solve for x
    x = 38,478,075.16/6,980.18
  6. Step 6: Final answer
    x = 5,512.48

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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.