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Finding the Fourth Proportional to 7,152.25, 9,870.51 and 4,009.45

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Solution

The fourth proportional to 7,152.25, 9,870.51 and 4,009.45 is: 5,533.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,152.25 : 9,870.51 = 4,009.45 : x
  2. Step 2: Convert to fraction form
    7,152.25/9,870.51 = 4,009.45/x
  3. Step 3: Cross multiply
    7,152.25x = 9,870.51 × 4,009.45
  4. Step 4: Simplify right side
    7,152.25x = 39,575,316.32
  5. Step 5: Solve for x
    x = 39,575,316.32/7,152.25
  6. Step 6: Final answer
    x = 5,533.27

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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.