Home / 1,547.21-2,320.80-1,240.98

Finding the Fourth Proportional to 1,547.21, 2,320.80 and 1,240.98

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Solution

The fourth proportional to 1,547.21, 2,320.80 and 1,240.98 is: 1,861.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.21 : 2,320.80 = 1,240.98 : x
  2. Step 2: Convert to fraction form
    1,547.21/2,320.80 = 1,240.98/x
  3. Step 3: Cross multiply
    1,547.21x = 2,320.80 × 1,240.98
  4. Step 4: Simplify right side
    1,547.21x = 2,880,066.38
  5. Step 5: Solve for x
    x = 2,880,066.38/1,547.21
  6. Step 6: Final answer
    x = 1,861.46

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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.