Home / 6,510.72-8,989.20-5,187.36

Finding the Fourth Proportional to 6,510.72, 8,989.20 and 5,187.36

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Solution

The fourth proportional to 6,510.72, 8,989.20 and 5,187.36 is: 7,162.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,510.72 : 8,989.20 = 5,187.36 : x
  2. Step 2: Convert to fraction form
    6,510.72/8,989.20 = 5,187.36/x
  3. Step 3: Cross multiply
    6,510.72x = 8,989.20 × 5,187.36
  4. Step 4: Simplify right side
    6,510.72x = 46,630,216.51
  5. Step 5: Solve for x
    x = 46,630,216.51/6,510.72
  6. Step 6: Final answer
    x = 7,162.07

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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.