Home / 9,870.46-13,621.40-5,394.40

Finding the Fourth Proportional to 9,870.46, 13,621.40 and 5,394.40

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Solution

The fourth proportional to 9,870.46, 13,621.40 and 5,394.40 is: 7,444.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,870.46 : 13,621.40 = 5,394.40 : x
  2. Step 2: Convert to fraction form
    9,870.46/13,621.40 = 5,394.40/x
  3. Step 3: Cross multiply
    9,870.46x = 13,621.40 × 5,394.40
  4. Step 4: Simplify right side
    9,870.46x = 73,479,259.59
  5. Step 5: Solve for x
    x = 73,479,259.59/9,870.46
  6. Step 6: Final answer
    x = 7,444.36

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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.