Home / 4,455.93-6,685.47-1,990.53

Finding the Fourth Proportional to 4,455.93, 6,685.47 and 1,990.53

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Solution

The fourth proportional to 4,455.93, 6,685.47 and 1,990.53 is: 2,986.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,455.93 : 6,685.47 = 1,990.53 : x
  2. Step 2: Convert to fraction form
    4,455.93/6,685.47 = 1,990.53/x
  3. Step 3: Cross multiply
    4,455.93x = 6,685.47 × 1,990.53
  4. Step 4: Simplify right side
    4,455.93x = 13,307,628.60
  5. Step 5: Solve for x
    x = 13,307,628.60/4,455.93
  6. Step 6: Final answer
    x = 2,986.50

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.