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Finding the Fourth Proportional to 9,240.90, 12,750.93 and 5,703.90

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Solution

The fourth proportional to 9,240.90, 12,750.93 and 5,703.90 is: 7,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,240.90 : 12,750.93 = 5,703.90 : x
  2. Step 2: Convert to fraction form
    9,240.90/12,750.93 = 5,703.90/x
  3. Step 3: Cross multiply
    9,240.90x = 12,750.93 × 5,703.90
  4. Step 4: Simplify right side
    9,240.90x = 72,730,029.63
  5. Step 5: Solve for x
    x = 72,730,029.63/9,240.90
  6. Step 6: Final answer
    x = 7,870.45

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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.