Home / 7,130.26-9,840.08-3,986.45

Finding the Fourth Proportional to 7,130.26, 9,840.08 and 3,986.45

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Solution

The fourth proportional to 7,130.26, 9,840.08 and 3,986.45 is: 5,501.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.26 : 9,840.08 = 3,986.45 : x
  2. Step 2: Convert to fraction form
    7,130.26/9,840.08 = 3,986.45/x
  3. Step 3: Cross multiply
    7,130.26x = 9,840.08 × 3,986.45
  4. Step 4: Simplify right side
    7,130.26x = 39,226,984.58
  5. Step 5: Solve for x
    x = 39,226,984.58/7,130.26
  6. Step 6: Final answer
    x = 5,501.48

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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.