Home / 7,139.31-10,657.86-6,205.39

Finding the Fourth Proportional to 7,139.31, 10,657.86 and 6,205.39

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Solution

The fourth proportional to 7,139.31, 10,657.86 and 6,205.39 is: 9,263.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.31 : 10,657.86 = 6,205.39 : x
  2. Step 2: Convert to fraction form
    7,139.31/10,657.86 = 6,205.39/x
  3. Step 3: Cross multiply
    7,139.31x = 10,657.86 × 6,205.39
  4. Step 4: Simplify right side
    7,139.31x = 66,136,191.19
  5. Step 5: Solve for x
    x = 66,136,191.19/7,139.31
  6. Step 6: Final answer
    x = 9,263.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.