Home / 7,345.16-10,136.34-3,987.98

Finding the Fourth Proportional to 7,345.16, 10,136.34 and 3,987.98

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Solution

The fourth proportional to 7,345.16, 10,136.34 and 3,987.98 is: 5,503.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.16 : 10,136.34 = 3,987.98 : x
  2. Step 2: Convert to fraction form
    7,345.16/10,136.34 = 3,987.98/x
  3. Step 3: Cross multiply
    7,345.16x = 10,136.34 × 3,987.98
  4. Step 4: Simplify right side
    7,345.16x = 40,423,521.19
  5. Step 5: Solve for x
    x = 40,423,521.19/7,345.16
  6. Step 6: Final answer
    x = 5,503.42

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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.