Home / 9,870.90-13,621.45-5,394.70

Finding the Fourth Proportional to 9,870.90, 13,621.45 and 5,394.70

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Solution

The fourth proportional to 9,870.90, 13,621.45 and 5,394.70 is: 7,444.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,870.90 : 13,621.45 = 5,394.70 : x
  2. Step 2: Convert to fraction form
    9,870.90/13,621.45 = 5,394.70/x
  3. Step 3: Cross multiply
    9,870.90x = 13,621.45 × 5,394.70
  4. Step 4: Simplify right side
    9,870.90x = 73,483,636.32
  5. Step 5: Solve for x
    x = 73,483,636.32/9,870.90
  6. Step 6: Final answer
    x = 7,444.47

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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.