Home / 7,345.02-10,136.08-3,987.77

Finding the Fourth Proportional to 7,345.02, 10,136.08 and 3,987.77

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Solution

The fourth proportional to 7,345.02, 10,136.08 and 3,987.77 is: 5,503.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.02 : 10,136.08 = 3,987.77 : x
  2. Step 2: Convert to fraction form
    7,345.02/10,136.08 = 3,987.77/x
  3. Step 3: Cross multiply
    7,345.02x = 10,136.08 × 3,987.77
  4. Step 4: Simplify right side
    7,345.02x = 40,420,335.80
  5. Step 5: Solve for x
    x = 40,420,335.80/7,345.02
  6. Step 6: Final answer
    x = 5,503.09

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Double scale
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Similar ratio
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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.