Home / 7,090.40-10,688.72-6,614.66

Finding the Fourth Proportional to 7,090.40, 10,688.72 and 6,614.66

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Solution

The fourth proportional to 7,090.40, 10,688.72 and 6,614.66 is: 9,971.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.40 : 10,688.72 = 6,614.66 : x
  2. Step 2: Convert to fraction form
    7,090.40/10,688.72 = 6,614.66/x
  3. Step 3: Cross multiply
    7,090.40x = 10,688.72 × 6,614.66
  4. Step 4: Simplify right side
    7,090.40x = 70,702,248.64
  5. Step 5: Solve for x
    x = 70,702,248.64/7,090.40
  6. Step 6: Final answer
    x = 9,971.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.