Home / 7,720.11-10,656.16-4,740.32

Finding the Fourth Proportional to 7,720.11, 10,656.16 and 4,740.32

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Solution

The fourth proportional to 7,720.11, 10,656.16 and 4,740.32 is: 6,543.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.11 : 10,656.16 = 4,740.32 : x
  2. Step 2: Convert to fraction form
    7,720.11/10,656.16 = 4,740.32/x
  3. Step 3: Cross multiply
    7,720.11x = 10,656.16 × 4,740.32
  4. Step 4: Simplify right side
    7,720.11x = 50,513,623.16
  5. Step 5: Solve for x
    x = 50,513,623.16/7,720.11
  6. Step 6: Final answer
    x = 6,543.12

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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.