Home / 6,870.40-10,296.96-5,329.60

Finding the Fourth Proportional to 6,870.40, 10,296.96 and 5,329.60

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Solution

The fourth proportional to 6,870.40, 10,296.96 and 5,329.60 is: 7,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870.40 : 10,296.96 = 5,329.60 : x
  2. Step 2: Convert to fraction form
    6,870.40/10,296.96 = 5,329.60/x
  3. Step 3: Cross multiply
    6,870.40x = 10,296.96 × 5,329.60
  4. Step 4: Simplify right side
    6,870.40x = 54,878,678.02
  5. Step 5: Solve for x
    x = 54,878,678.02/6,870.40
  6. Step 6: Final answer
    x = 7,987.70

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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.