Home / 1,283.79-1,916.93-1,126.45

Finding the Fourth Proportional to 1,283.79, 1,916.93 and 1,126.45

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Solution

The fourth proportional to 1,283.79, 1,916.93 and 1,126.45 is: 1,681.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.79 : 1,916.93 = 1,126.45 : x
  2. Step 2: Convert to fraction form
    1,283.79/1,916.93 = 1,126.45/x
  3. Step 3: Cross multiply
    1,283.79x = 1,916.93 × 1,126.45
  4. Step 4: Simplify right side
    1,283.79x = 2,159,325.80
  5. Step 5: Solve for x
    x = 2,159,325.80/1,283.79
  6. Step 6: Final answer
    x = 1,681.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.