Home / 7,156.61-9,875.99-4,012.80

Finding the Fourth Proportional to 7,156.61, 9,875.99 and 4,012.80

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Solution

The fourth proportional to 7,156.61, 9,875.99 and 4,012.80 is: 5,537.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,156.61 : 9,875.99 = 4,012.80 : x
  2. Step 2: Convert to fraction form
    7,156.61/9,875.99 = 4,012.80/x
  3. Step 3: Cross multiply
    7,156.61x = 9,875.99 × 4,012.80
  4. Step 4: Simplify right side
    7,156.61x = 39,630,345.67
  5. Step 5: Solve for x
    x = 39,630,345.67/7,156.61
  6. Step 6: Final answer
    x = 5,537.59

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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.