Home / 6,630.40-9,140.28-4,634.74

Finding the Fourth Proportional to 6,630.40, 9,140.28 and 4,634.74

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Solution

The fourth proportional to 6,630.40, 9,140.28 and 4,634.74 is: 6,389.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,630.40 : 9,140.28 = 4,634.74 : x
  2. Step 2: Convert to fraction form
    6,630.40/9,140.28 = 4,634.74/x
  3. Step 3: Cross multiply
    6,630.40x = 9,140.28 × 4,634.74
  4. Step 4: Simplify right side
    6,630.40x = 42,362,821.33
  5. Step 5: Solve for x
    x = 42,362,821.33/6,630.40
  6. Step 6: Final answer
    x = 6,389.18

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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.