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Finding the Fourth Proportional to 5,920.99, 8,860.95 and 4,280.74

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Solution

The fourth proportional to 5,920.99, 8,860.95 and 4,280.74 is: 6,406.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,920.99 : 8,860.95 = 4,280.74 : x
  2. Step 2: Convert to fraction form
    5,920.99/8,860.95 = 4,280.74/x
  3. Step 3: Cross multiply
    5,920.99x = 8,860.95 × 4,280.74
  4. Step 4: Simplify right side
    5,920.99x = 37,931,400.95
  5. Step 5: Solve for x
    x = 37,931,400.95/5,920.99
  6. Step 6: Final answer
    x = 6,406.26

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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.