Home / 6,428.95-9,647.26-2,870.79

Finding the Fourth Proportional to 6,428.95, 9,647.26 and 2,870.79

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Solution

The fourth proportional to 6,428.95, 9,647.26 and 2,870.79 is: 4,307.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.95 : 9,647.26 = 2,870.79 : x
  2. Step 2: Convert to fraction form
    6,428.95/9,647.26 = 2,870.79/x
  3. Step 3: Cross multiply
    6,428.95x = 9,647.26 × 2,870.79
  4. Step 4: Simplify right side
    6,428.95x = 27,695,243.18
  5. Step 5: Solve for x
    x = 27,695,243.18/6,428.95
  6. Step 6: Final answer
    x = 4,307.90

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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.