Home / 7,670.07-11,503.40-2,990.21

Finding the Fourth Proportional to 7,670.07, 11,503.40 and 2,990.21

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Solution

The fourth proportional to 7,670.07, 11,503.40 and 2,990.21 is: 4,484.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,670.07 : 11,503.40 = 2,990.21 : x
  2. Step 2: Convert to fraction form
    7,670.07/11,503.40 = 2,990.21/x
  3. Step 3: Cross multiply
    7,670.07x = 11,503.40 × 2,990.21
  4. Step 4: Simplify right side
    7,670.07x = 34,397,509.25
  5. Step 5: Solve for x
    x = 34,397,509.25/7,670.07
  6. Step 6: Final answer
    x = 4,484.64

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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.