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Finding the Fourth Proportional to 9,038.10, 13,555.90 and 2,802.40

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Solution

The fourth proportional to 9,038.10, 13,555.90 and 2,802.40 is: 4,203.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,038.10 : 13,555.90 = 2,802.40 : x
  2. Step 2: Convert to fraction form
    9,038.10/13,555.90 = 2,802.40/x
  3. Step 3: Cross multiply
    9,038.10x = 13,555.90 × 2,802.40
  4. Step 4: Simplify right side
    9,038.10x = 37,989,054.16
  5. Step 5: Solve for x
    x = 37,989,054.16/9,038.10
  6. Step 6: Final answer
    x = 4,203.21

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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.