Home / 7,157.79-10,740.51-5,390.64

Finding the Fourth Proportional to 7,157.79, 10,740.51 and 5,390.64

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Solution

The fourth proportional to 7,157.79, 10,740.51 and 5,390.64 is: 8,088.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.79 : 10,740.51 = 5,390.64 : x
  2. Step 2: Convert to fraction form
    7,157.79/10,740.51 = 5,390.64/x
  3. Step 3: Cross multiply
    7,157.79x = 10,740.51 × 5,390.64
  4. Step 4: Simplify right side
    7,157.79x = 57,898,222.83
  5. Step 5: Solve for x
    x = 57,898,222.83/7,157.79
  6. Step 6: Final answer
    x = 8,088.84

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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.