Home / 5,639.90-8,419.48-4,901.99

Finding the Fourth Proportional to 5,639.90, 8,419.48 and 4,901.99

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Solution

The fourth proportional to 5,639.90, 8,419.48 and 4,901.99 is: 7,317.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.90 : 8,419.48 = 4,901.99 : x
  2. Step 2: Convert to fraction form
    5,639.90/8,419.48 = 4,901.99/x
  3. Step 3: Cross multiply
    5,639.90x = 8,419.48 × 4,901.99
  4. Step 4: Simplify right side
    5,639.90x = 41,272,152.41
  5. Step 5: Solve for x
    x = 41,272,152.41/5,639.90
  6. Step 6: Final answer
    x = 7,317.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.