Home / 6,870.79-9,478.67-4,631.85

Finding the Fourth Proportional to 6,870.79, 9,478.67 and 4,631.85

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Solution

The fourth proportional to 6,870.79, 9,478.67 and 4,631.85 is: 6,389.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870.79 : 9,478.67 = 4,631.85 : x
  2. Step 2: Convert to fraction form
    6,870.79/9,478.67 = 4,631.85/x
  3. Step 3: Cross multiply
    6,870.79x = 9,478.67 × 4,631.85
  4. Step 4: Simplify right side
    6,870.79x = 43,903,777.64
  5. Step 5: Solve for x
    x = 43,903,777.64/6,870.79
  6. Step 6: Final answer
    x = 6,389.92

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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.