Home / 6,985.77-10,485.53-5,131.68

Finding the Fourth Proportional to 6,985.77, 10,485.53 and 5,131.68

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Solution

The fourth proportional to 6,985.77, 10,485.53 and 5,131.68 is: 7,702.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.77 : 10,485.53 = 5,131.68 : x
  2. Step 2: Convert to fraction form
    6,985.77/10,485.53 = 5,131.68/x
  3. Step 3: Cross multiply
    6,985.77x = 10,485.53 × 5,131.68
  4. Step 4: Simplify right side
    6,985.77x = 53,808,384.59
  5. Step 5: Solve for x
    x = 53,808,384.59/6,985.77
  6. Step 6: Final answer
    x = 7,702.57

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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.